{"id":17244,"date":"2026-09-21T14:01:38","date_gmt":"2026-09-21T06:01:38","guid":{"rendered":"https:\/\/tiffanysmandarin.com\/?p=17244"},"modified":"2026-09-21T14:01:40","modified_gmt":"2026-09-21T06:01:40","slug":"chinas-high-speed-trains","status":"publish","type":"post","link":"https:\/\/tiffanysmandarin.com\/index.php\/2026\/09\/21\/chinas-high-speed-trains\/","title":{"rendered":"Noise-Canceling Headrests on China&#8217;s High-Speed Trains"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_88 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/tiffanysmandarin.com\/index.php\/2026\/09\/21\/chinas-high-speed-trains\/#Vocabulary\" >Vocabulary<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/tiffanysmandarin.com\/index.php\/2026\/09\/21\/chinas-high-speed-trains\/#Reading_Passage\" >Reading Passage<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/tiffanysmandarin.com\/index.php\/2026\/09\/21\/chinas-high-speed-trains\/#Comprehension_Questions\" >Comprehension Questions<\/a><\/li><\/ul><\/nav><\/div>\n\n<div style=\"height:6px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<style>\n  #hsk79-rail {\n    --brass: #a9782f;\n    --brass-deep: #8a611f;\n    --ink: #2b2620;\n    --ink-soft: #5a5148;\n    --cream: #faf6ec;\n    --cream-light: #fdfbf6;\n    --cream-deep: #f0e8d5;\n    --border: #e3d7bc;\n    --white: #ffffff;\n    --correct: #4c7a4c;\n    --wrong: #a5433a;\n    background: #ffffff;\n    color: var(--ink);\n    max-width: 760px;\n    margin: 0 auto;\n    padding: 24px 16px 60px;\n    font-family: Georgia, \"Times New Roman\", serif;\n    line-height: 1.7;\n    box-sizing: border-box;\n  }\n  #hsk79-rail *, #hsk79-rail *::before, #hsk79-rail *::after { box-sizing: border-box; }\n\n  #hsk79-rail .lang-zh-TW, #hsk79-rail .lang-zh-CN {\n    font-family: \"Noto Serif TC\", \"Noto Serif SC\", \"Microsoft JhengHei\", \"PingFang TC\", serif;\n  }\n\n  \/* ---------- ruby ---------- *\/\n  #hsk79-rail ruby {\n    font-size: 1em !important;\n    color: var(--ink) !important;\n    line-height: 2.1;\n    letter-spacing: 1px;\n  }\n  #hsk79-rail ruby .rb {\n    color: var(--ink) !important;\n  }\n  #hsk79-rail ruby rt {\n    font-family: Georgia, serif;\n    font-size: 11px;\n    color: var(--ink-soft) !important;\n    font-style: normal;\n  }\n\n  \/* ---------- hero ---------- *\/\n  #hsk79-rail .hero { text-align: center; padding: 10px 0 28px; }\n  #hsk79-rail .eyebrow {\n    display: inline-block;\n    font-family: Georgia, serif;\n    font-style: italic;\n    font-size: 17px !important;\n    letter-spacing: 0.08em;\n    color: var(--brass);\n    margin-bottom: 10px;\n  }\n  #hsk79-rail h1 {\n    font-family: Georgia, serif;\n    font-weight: normal;\n    font-size: 26px;\n    margin: 0;\n    color: var(--ink);\n    line-height: 1.3;\n  }\n  #hsk79-rail .hero-rule {\n    width: 60px;\n    height: 2px;\n    background: var(--brass);\n    margin: 18px auto 0;\n  }\n\n  \/* ---------- cover image ---------- *\/\n  #hsk79-rail .cover-wrap { margin: 4px 0 24px; text-align: center; }\n  #hsk79-rail .cover-wrap img {\n    width: 100%;\n    max-width: 100%;\n    height: auto;\n    display: block;\n    margin: 0 auto;\n  }\n\n  \/* ---------- coffee button ---------- *\/\n  #hsk79-rail .coffee-wrap {\n    text-align: center;\n    margin: 48px 0 8px;\n    padding-top: 28px;\n    border-top: 1px solid var(--border);\n  }\n  #hsk79-rail .coffee-title {\n    font-family: Georgia, serif;\n    font-style: italic;\n    font-size: 16px;\n    color: var(--ink);\n    margin: 0 0 6px;\n  }\n  #hsk79-rail .coffee-sub {\n    font-family: Georgia, serif;\n    font-size: 13px;\n    color: var(--ink-soft);\n    margin: 0 0 16px;\n  }\n  #hsk79-rail .coffee-btn {\n    display: inline-flex;\n    align-items: center;\n    gap: 8px;\n    font-family: \"IBM Plex Mono\", \"Courier New\", monospace;\n    font-size: 12px;\n    letter-spacing: 0.06em;\n    text-transform: uppercase;\n    background: var(--white);\n    color: var(--brass-deep) !important;\n    border: 1px solid var(--brass);\n    border-radius: 999px;\n    padding: 10px 22px;\n    text-decoration: none !important;\n    transition: background 0.2s ease, transform 0.2s ease;\n  }\n  #hsk79-rail .coffee-btn:hover { background: var(--cream-light); transform: translateY(-1px); }\n\n  \/* ---------- headings ---------- *\/\n  #hsk79-rail h2 {\n    font-family: Georgia, serif;\n    font-weight: normal;\n    font-style: italic;\n    font-size: 20px;\n    color: var(--brass-deep);\n    text-align: center;\n    margin: 50px 0 6px;\n  }\n  #hsk79-rail h2::after {\n    content: \"\";\n    display: block;\n    width: 34px;\n    height: 1px;\n    background: var(--brass);\n    margin: 10px auto 0;\n  }\n\n  \/* ---------- vocabulary card stack ---------- *\/\n  #hsk79-rail .stack-wrap {\n    position: relative;\n    width: 100%;\n    max-width: 420px;\n    height: 320px;\n    margin: 6px auto 22px;\n  }\n  #hsk79-rail .flashcard {\n    position: absolute;\n    top: 0; left: 0;\n    width: 100%;\n    height: 100%;\n    perspective: 1200px;\n    cursor: pointer;\n    transition: transform 0.35s ease, opacity 0.35s ease;\n  }\n  #hsk79-rail .flashcard[data-pos=\"0\"] { transform: translateY(0) scale(1) rotate(0deg); z-index: 30; }\n  #hsk79-rail .flashcard[data-pos=\"1\"] { transform: translateY(10px) scale(0.96) rotate(-4deg); z-index: 20; pointer-events: none; }\n  #hsk79-rail .flashcard[data-pos=\"2\"] { transform: translateY(18px) scale(0.92) rotate(3deg); z-index: 10; pointer-events: none; }\n  #hsk79-rail .flashcard[data-pos=\"hidden\"] { opacity: 0; pointer-events: none; z-index: 0; }\n  #hsk79-rail .flashcard-inner {\n    position: relative;\n    width: 100%;\n    height: 100%;\n    transition: transform 0.5s cubic-bezier(0.4, 0.2, 0.2, 1);\n    transform-style: preserve-3d;\n  }\n  #hsk79-rail .flashcard.flipped .flashcard-inner { transform: rotateY(180deg); }\n  #hsk79-rail .flashcard-face {\n    position: absolute;\n    inset: 0;\n    backface-visibility: hidden;\n    -webkit-backface-visibility: hidden;\n    background: var(--white);\n    border: 1px solid var(--border);\n    border-radius: 8px;\n    box-shadow: 0 6px 16px -10px rgba(43, 38, 32, 0.4);\n    display: flex;\n    flex-direction: column;\n    align-items: center;\n    justify-content: center;\n    text-align: center;\n    padding: 26px 28px;\n    overflow: hidden;\n  }\n  #hsk79-rail .flashcard-back { transform: rotateY(180deg); }\n  #hsk79-rail .flashcard-front ruby { font-size: 3em !important; margin-bottom: 6px; }\n  #hsk79-rail .flashcard-front ruby rt { font-size: 15px !important; }\n  #hsk79-rail .flashcard-hint {\n    position: absolute;\n    bottom: 10px;\n    right: 12px;\n    font-family: \"IBM Plex Mono\", \"Courier New\", monospace;\n    font-size: 12px !important;\n    letter-spacing: 0.08em;\n    text-transform: uppercase;\n    color: var(--brass);\n    opacity: 0.75;\n  }\n  #hsk79-rail .flashcard-corner {\n    position: absolute;\n    top: 10px;\n    left: 12px;\n    font-family: \"IBM Plex Mono\", \"Courier New\", monospace;\n    font-size: 12px !important;\n    letter-spacing: 0.08em;\n    text-transform: uppercase;\n    color: var(--brass);\n    opacity: 0.75;\n  }\n  #hsk79-rail .flashcard-gloss {\n    font-family: Georgia, serif;\n    font-style: italic;\n    font-size: 21px !important;\n    color: var(--ink);\n    margin: 0 0 12px;\n  }\n  #hsk79-rail .flashcard-rule {\n    width: 26px;\n    height: 1px;\n    background: var(--brass);\n    margin: 0 0 10px;\n  }\n  #hsk79-rail .flashcard-back .flashcard-example { margin: 0 0 6px; line-height: 1.9; }\n  #hsk79-rail .flashcard-back .flashcard-example ruby { font-size: 1.15em !important; }\n  #hsk79-rail .flashcard-back .flashcard-example ruby rt { font-size: 12.5px !important; }\n  #hsk79-rail .flashcard-back .flashcard-en {\n    font-family: Georgia, serif;\n    font-size: 15px !important;\n    color: var(--ink-soft);\n    margin: 0;\n    line-height: 1.5;\n  }\n  #hsk79-rail .stack-nav {\n    display: flex;\n    align-items: center;\n    justify-content: center;\n    gap: 18px;\n    margin-top: 4px;\n  }\n  #hsk79-rail .stack-nav button {\n    font-family: \"IBM Plex Mono\", \"Courier New\", monospace;\n    font-size: 11px;\n    letter-spacing: 0.08em;\n    text-transform: uppercase;\n    background: var(--white);\n    border: 1px solid var(--brass);\n    color: var(--brass-deep) !important;\n    border-radius: 3px;\n    padding: 7px 14px;\n    cursor: pointer;\n  }\n  #hsk79-rail .stack-counter {\n    font-family: \"IBM Plex Mono\", \"Courier New\", monospace;\n    font-size: 11px;\n    letter-spacing: 0.06em;\n    color: var(--brass-deep);\n    min-width: 46px;\n    text-align: center;\n  }\n\n  \/* ---------- reading page (book feel) ---------- *\/\n  #hsk79-rail .book-page {\n    background: var(--white);\n    border: 1px solid var(--border);\n    border-radius: 2px;\n    box-shadow: 0 1px 0 var(--white) inset, 0 8px 22px -14px rgba(43, 38, 32, 0.35);\n    padding: 40px 34px 36px;\n    margin-bottom: 22px;\n    position: relative;\n  }\n  #hsk79-rail .book-page::before {\n    content: \"\";\n    position: absolute;\n    top: 14px; left: 14px; right: 14px; bottom: 14px;\n    border: 1px solid var(--border);\n    pointer-events: none;\n  }\n  #hsk79-rail .book-page-inner { position: relative; }\n  #hsk79-rail .book-mark {\n    display: block;\n    text-align: center;\n    font-family: \"IBM Plex Mono\", \"Courier New\", monospace;\n    font-size: 21px !important;\n    letter-spacing: 0.08em;\n    text-transform: uppercase;\n    color: var(--brass);\n    margin-bottom: 24px;\n  }\n  #hsk79-rail .book-page p {\n    margin: 0 0 20px;\n    font-size: 17px;\n    line-height: 2.3;\n    text-align: justify;\n    text-indent: 2em;\n  }\n  #hsk79-rail .book-page p:last-child { margin-bottom: 0; }\n  #hsk79-rail .book-page ruby,\n  #hsk79-rail .book-page .lang-zh-TW,\n  #hsk79-rail .book-page .lang-zh-CN { line-height: 2.3; }\n\n  \/* ---------- pinyin \/ english toggle block ---------- *\/\n  #hsk79-rail .toggle-card {\n    background: var(--white);\n    border: 1px solid var(--border);\n    border-radius: 4px;\n    padding: 18px 20px 20px;\n    margin-bottom: 14px;\n  }\n  #hsk79-rail .toggle-switch {\n    display: flex;\n    gap: 6px;\n    justify-content: center;\n    margin-bottom: 16px;\n  }\n  #hsk79-rail .toggle-btn {\n    font-family: \"IBM Plex Mono\", \"Courier New\", monospace;\n    font-size: 10.5px;\n    letter-spacing: 0.09em;\n    text-transform: uppercase;\n    background: var(--white);\n    border: 1px solid var(--border);\n    color: var(--ink-soft) !important;\n    border-radius: 999px;\n    padding: 7px 18px;\n    cursor: pointer;\n  }\n  #hsk79-rail .toggle-btn.active {\n    background: var(--brass);\n    border-color: var(--brass);\n    color: #fff !important;\n  }\n  #hsk79-rail .toggle-pane { display: none; }\n  #hsk79-rail .toggle-pane.active { display: block; }\n  #hsk79-rail .toggle-pane p {\n    font-family: Georgia, serif;\n    font-size: 15px;\n    color: var(--ink);\n    margin: 0 0 14px;\n  }\n  #hsk79-rail .toggle-pane p:last-child { margin-bottom: 0; }\n\n  \/* ---------- quiz ---------- *\/\n  #hsk79-rail .quiz-shell {\n    background: var(--cream);\n    border: 1px solid var(--border);\n    border-radius: 4px;\n    padding: 20px;\n  }\n  #hsk79-rail .quiz-progress {\n    font-family: \"IBM Plex Mono\", \"Courier New\", monospace;\n    font-size: 11px;\n    letter-spacing: 0.06em;\n    color: var(--brass-deep);\n    text-align: center;\n    margin-bottom: 14px;\n  }\n  #hsk79-rail .quiz-card { display: none; }\n  #hsk79-rail .quiz-card.active { display: block; }\n  #hsk79-rail .quiz-q { font-size: 16px; margin-bottom: 14px; }\n  #hsk79-rail .quiz-opt {\n    display: block;\n    width: 100%;\n    text-align: left;\n    background: var(--white);\n    border: 1px solid var(--border);\n    border-radius: 4px;\n    padding: 10px 14px;\n    margin-bottom: 8px;\n    font-family: inherit;\n    font-size: 14.5px;\n    font-weight: normal !important;\n    color: var(--ink) !important;\n    cursor: pointer;\n  }\n  #hsk79-rail .quiz-opt:hover { border-color: var(--brass); }\n  #hsk79-rail .quiz-opt.correct { border-color: var(--correct); background: #f0f6ef; }\n  #hsk79-rail .quiz-opt.wrong { border-color: var(--wrong); background: #f9efed; }\n  #hsk79-rail .quiz-opt[disabled] { cursor: default; }\n  #hsk79-rail .quiz-explain {\n    display: none;\n    font-family: Georgia, serif;\n    font-style: italic;\n    font-size: 13.5px;\n    color: var(--ink-soft);\n    border-top: 1px dashed var(--border);\n    margin-top: 10px;\n    padding-top: 10px;\n  }\n  #hsk79-rail .quiz-explain.show { display: block; }\n  #hsk79-rail .quiz-nav { display: flex; justify-content: space-between; margin-top: 18px; }\n  #hsk79-rail .quiz-nav button {\n    font-family: \"IBM Plex Mono\", \"Courier New\", monospace;\n    font-size: 11px;\n    letter-spacing: 0.08em;\n    text-transform: uppercase;\n    background: var(--white);\n    border: 1px solid var(--brass);\n    color: var(--brass-deep) !important;\n    border-radius: 3px;\n    padding: 8px 16px;\n    cursor: pointer;\n  }\n  #hsk79-rail .quiz-nav button:disabled { opacity: 0.35; cursor: default; }\n\n  \/* ---------- mobile ---------- *\/\n  @media (max-width: 520px) {\n    #hsk79-rail { padding: 5px 12px 40px; }\n    #hsk79-rail .toggle-card, #hsk79-rail .quiz-shell { padding: 12px 14px; }\n    #hsk79-rail .stack-wrap { max-width: 320px; height: 260px; }\n    #hsk79-rail .book-page { padding: 26px 16px 24px; }\n    #hsk79-rail .book-page::before { top: 8px; left: 8px; right: 8px; bottom: 8px; }\n    #hsk79-rail .book-page p { text-indent: 1.4em; font-size: 15.5px; }\n    #hsk79-rail h1 { font-size: 21px; }\n  }\n<\/style>\n\n<div id=\"hsk79-rail\">\n\n  <div class=\"hero\">\n    <span class=\"eyebrow\">HSK 7&ndash;9 &middot; Reading Practice<\/span>\n    <h1>Noise-Canceling Headrests on China&#8217;s High-Speed Trains<\/h1>\n    <div class=\"hero-rule\"><\/div>\n  <\/div>\n\n  <!-- ============ VOCABULARY ============ -->\n  <h2 id=\"hsk79-vocab\"><span class=\"ez-toc-section\" id=\"Vocabulary\"><\/span>Vocabulary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n  <div class=\"stack-wrap\">\n\n    <div class=\"flashcard\" data-pos=\"0\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5fc5\u4e0d\u53ef\u5c11<\/span><rt>b\u00ecb\u00f9k\u011bsh\u01ceo<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5fc5\u4e0d\u53ef\u5c11<\/span><rt>b\u00ecb\u00f9k\u011bsh\u01ceo<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">indispensable, essential<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u6c34<\/span><rt>shu\u01d0<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\u751f\u6d3b<\/span><rt>sh\u0113nghu\u00f3<\/rt><span class=\"rb\">\u4e2d<\/span><rt>zh\u014dng<\/rt><span class=\"rb\">\u5fc5\u4e0d\u53ef\u5c11<\/span><rt>b\u00ecb\u00f9k\u011bsh\u01ceo<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u8cc7\u6e90<\/span><rt>z\u012byu\u00e1n<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u6c34<\/span><rt>shu\u01d0<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\u751f\u6d3b<\/span><rt>sh\u0113nghu\u00f3<\/rt><span class=\"rb\">\u4e2d<\/span><rt>zh\u014dng<\/rt><span class=\"rb\">\u5fc5\u4e0d\u53ef\u5c11<\/span><rt>b\u00ecb\u00f9k\u011bsh\u01ceo<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u8d44\u6e90<\/span><rt>z\u012byu\u00e1n<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">Water is an indispensable resource in daily life.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5e72\u64fe<\/span><rt>g\u0101nr\u01ceo<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5e72\u6270<\/span><rt>g\u0101nr\u01ceo<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">interference, to disturb<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u624b\u6a5f<\/span><rt>sh\u01d2uj\u012b<\/rt><span class=\"rb\">\u4fe1\u865f<\/span><rt>x\u00ecnh\u00e0o<\/rt><span class=\"rb\">\u6709\u6642<\/span><rt>y\u01d2ush\u00ed<\/rt><span class=\"rb\">\u6703<\/span><rt>hu\u00ec<\/rt><span class=\"rb\">\u53d7\u5230<\/span><rt>sh\u00f2ud\u00e0o<\/rt><span class=\"rb\">\u5929\u6c23<\/span><rt>ti\u0101nq\u00ec<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u5e72\u64fe<\/span><rt>g\u0101nr\u01ceo<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u624b\u673a<\/span><rt>sh\u01d2uj\u012b<\/rt><span class=\"rb\">\u4fe1\u53f7<\/span><rt>x\u00ecnh\u00e0o<\/rt><span class=\"rb\">\u6709\u65f6<\/span><rt>y\u01d2ush\u00ed<\/rt><span class=\"rb\">\u4f1a<\/span><rt>hu\u00ec<\/rt><span class=\"rb\">\u53d7\u5230<\/span><rt>sh\u00f2ud\u00e0o<\/rt><span class=\"rb\">\u5929\u6c14<\/span><rt>ti\u0101nq\u00ec<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u5e72\u6270<\/span><rt>g\u0101nr\u01ceo<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">Cell phone signals are sometimes disturbed by the weather.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u62b5\u6d88<\/span><rt>d\u01d0xi\u0101o<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u62b5\u6d88<\/span><rt>d\u01d0xi\u0101o<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">to offset, cancel out<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u904b\u52d5<\/span><rt>y\u00f9nd\u00f2ng<\/rt><span class=\"rb\">\u5e36\u4f86\u7684<\/span><rt>d\u00e0il\u00e1i de<\/rt><span class=\"rb\">\u597d\u8655<\/span><rt>h\u01ceoch\u00f9<\/rt><span class=\"rb\">\u8db3\u4ee5<\/span><rt>z\u00fay\u01d0<\/rt><span class=\"rb\">\u62b5\u6d88<\/span><rt>d\u01d0xi\u0101o<\/rt><span class=\"rb\">\u4e45\u5750\u7684<\/span><rt>ji\u01d4zu\u00f2 de<\/rt><span class=\"rb\">\u58de\u8655<\/span><rt>hu\u00e0ich\u00f9<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u8fd0\u52a8<\/span><rt>y\u00f9nd\u00f2ng<\/rt><span class=\"rb\">\u5e26\u6765\u7684<\/span><rt>d\u00e0il\u00e1i de<\/rt><span class=\"rb\">\u597d\u5904<\/span><rt>h\u01ceoch\u00f9<\/rt><span class=\"rb\">\u8db3\u4ee5<\/span><rt>z\u00fay\u01d0<\/rt><span class=\"rb\">\u62b5\u6d88<\/span><rt>d\u01d0xi\u0101o<\/rt><span class=\"rb\">\u4e45\u5750\u7684<\/span><rt>ji\u01d4zu\u00f2 de<\/rt><span class=\"rb\">\u574f\u5904<\/span><rt>hu\u00e0ich\u00f9<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">The benefits of exercise are enough to offset the harm of sitting too long.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u758a\u52a0<\/span><rt>di\u00e9ji\u0101<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u53e0\u52a0<\/span><rt>di\u00e9ji\u0101<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">to superimpose, overlap<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u591a\u91cd<\/span><rt>du\u014dch\u00f3ng<\/rt><span class=\"rb\">\u58d3\u529b<\/span><rt>y\u0101l\u00ec<\/rt><span class=\"rb\">\u758a\u52a0<\/span><rt>di\u00e9ji\u0101<\/rt><span class=\"rb\">\uff0c<\/span><rt><\/rt><span class=\"rb\">\u8b93<\/span><rt>r\u00e0ng<\/rt><span class=\"rb\">\u4ed6<\/span><rt>t\u0101<\/rt><span class=\"rb\">\u611f\u5230<\/span><rt>g\u01cend\u00e0o<\/rt><span class=\"rb\">\u5341\u5206<\/span><rt>sh\u00edf\u0113n<\/rt><span class=\"rb\">\u75b2\u618a<\/span><rt>p\u00edb\u00e8i<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u591a\u91cd<\/span><rt>du\u014dch\u00f3ng<\/rt><span class=\"rb\">\u538b\u529b<\/span><rt>y\u0101l\u00ec<\/rt><span class=\"rb\">\u53e0\u52a0<\/span><rt>di\u00e9ji\u0101<\/rt><span class=\"rb\">\uff0c<\/span><rt><\/rt><span class=\"rb\">\u8ba9<\/span><rt>r\u00e0ng<\/rt><span class=\"rb\">\u4ed6<\/span><rt>t\u0101<\/rt><span class=\"rb\">\u611f\u5230<\/span><rt>g\u01cend\u00e0o<\/rt><span class=\"rb\">\u5341\u5206<\/span><rt>sh\u00edf\u0113n<\/rt><span class=\"rb\">\u75b2\u60eb<\/span><rt>p\u00edb\u00e8i<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">The overlapping of multiple pressures left him feeling utterly exhausted.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u81ea\u9069\u61c9<\/span><rt>z\u00ecsh\u00ecy\u00ecng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u81ea\u9002\u5e94<\/span><rt>z\u00ecsh\u00ecy\u00ecng<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">self-adaptive, adaptive<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u9019\u6b3e<\/span><rt>zh\u00e8 ku\u01cen<\/rt><span class=\"rb\">\u8edf\u9ad4<\/span><rt>ru\u01cent\u01d0<\/rt><span class=\"rb\">\u5177\u5099<\/span><rt>j\u00f9b\u00e8i<\/rt><span class=\"rb\">\u81ea\u9069\u61c9<\/span><rt>z\u00ecsh\u00ecy\u00ecng<\/rt><span class=\"rb\">\u87a2\u5e55<\/span><rt>y\u00edngm\u00f9<\/rt><span class=\"rb\">\u5927\u5c0f<\/span><rt>d\u00e0xi\u01ceo<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u529f\u80fd<\/span><rt>g\u014dngn\u00e9ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u8fd9\u6b3e<\/span><rt>zh\u00e8 ku\u01cen<\/rt><span class=\"rb\">\u8f6f\u4ef6<\/span><rt>ru\u01cenji\u00e0n<\/rt><span class=\"rb\">\u5177\u5907<\/span><rt>j\u00f9b\u00e8i<\/rt><span class=\"rb\">\u81ea\u9002\u5e94<\/span><rt>z\u00ecsh\u00ecy\u00ecng<\/rt><span class=\"rb\">\u5c4f\u5e55<\/span><rt>p\u00edngm\u00f9<\/rt><span class=\"rb\">\u5927\u5c0f<\/span><rt>d\u00e0xi\u01ceo<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u529f\u80fd<\/span><rt>g\u014dngn\u00e9ng<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">This software can automatically adapt to different screen sizes.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u76e3\u6e2c<\/span><rt>ji\u0101nc\u00e8<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u76d1\u6d4b<\/span><rt>ji\u0101nc\u00e8<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">to monitor, detect<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u91ab\u9662<\/span><rt>y\u012byu\u00e0n<\/rt><span class=\"rb\">\u6703<\/span><rt>hu\u00ec<\/rt><span class=\"rb\">\u6301\u7e8c<\/span><rt>ch\u00edx\u00f9<\/rt><span class=\"rb\">\u76e3\u6e2c<\/span><rt>ji\u0101nc\u00e8<\/rt><span class=\"rb\">\u75c5\u4eba\u7684<\/span><rt>b\u00ecngr\u00e9n de<\/rt><span class=\"rb\">\u5fc3\u8df3<\/span><rt>x\u012bnti\u00e0o<\/rt><span class=\"rb\">\u548c<\/span><rt>h\u00e9<\/rt><span class=\"rb\">\u8840\u58d3<\/span><rt>xu\u00e8y\u0101<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u533b\u9662<\/span><rt>y\u012byu\u00e0n<\/rt><span class=\"rb\">\u4f1a<\/span><rt>hu\u00ec<\/rt><span class=\"rb\">\u6301\u7eed<\/span><rt>ch\u00edx\u00f9<\/rt><span class=\"rb\">\u76d1\u6d4b<\/span><rt>ji\u0101nc\u00e8<\/rt><span class=\"rb\">\u75c5\u4eba\u7684<\/span><rt>b\u00ecngr\u00e9n de<\/rt><span class=\"rb\">\u5fc3\u8df3<\/span><rt>x\u012bnti\u00e0o<\/rt><span class=\"rb\">\u548c<\/span><rt>h\u00e9<\/rt><span class=\"rb\">\u8840\u538b<\/span><rt>xu\u00e8y\u0101<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">The hospital continuously monitors the patient&#8217;s heartbeat and blood pressure.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u8072\u6ce2<\/span><rt>sh\u0113ngb\u014d<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u58f0\u6ce2<\/span><rt>sh\u0113ngb\u014d<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">sound wave<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u6d77\u8c5a<\/span><rt>h\u01ceit\u00fan<\/rt><span class=\"rb\">\u5229\u7528<\/span><rt>l\u00ecy\u00f2ng<\/rt><span class=\"rb\">\u8072\u6ce2<\/span><rt>sh\u0113ngb\u014d<\/rt><span class=\"rb\">\u4f86<\/span><rt>l\u00e1i<\/rt><span class=\"rb\">\u5224\u65b7<\/span><rt>p\u00e0ndu\u00e0n<\/rt><span class=\"rb\">\u5468\u570d<\/span><rt>zh\u014duw\u00e9i<\/rt><span class=\"rb\">\u74b0\u5883<\/span><rt>hu\u00e1nj\u00ecng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u6d77\u8c5a<\/span><rt>h\u01ceit\u00fan<\/rt><span class=\"rb\">\u5229\u7528<\/span><rt>l\u00ecy\u00f2ng<\/rt><span class=\"rb\">\u58f0\u6ce2<\/span><rt>sh\u0113ngb\u014d<\/rt><span class=\"rb\">\u6765<\/span><rt>l\u00e1i<\/rt><span class=\"rb\">\u5224\u65ad<\/span><rt>p\u00e0ndu\u00e0n<\/rt><span class=\"rb\">\u5468\u56f4<\/span><rt>zh\u014duw\u00e9i<\/rt><span class=\"rb\">\u73af\u5883<\/span><rt>hu\u00e1nj\u00ecng<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">Dolphins use sound waves to sense their surrounding environment.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5996\u602a<\/span><rt>y\u0101ogu\u00e0i<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5996\u602a<\/span><rt>y\u0101ogu\u00e0i<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">monster, demon<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u9019\u90e8<\/span><rt>zh\u00e8 b\u00f9<\/rt><span class=\"rb\">\u96fb\u5f71<\/span><rt>di\u00e0ny\u01d0ng<\/rt><span class=\"rb\">\u8b1b\u7684\u662f<\/span><rt>ji\u01ceng de sh\u00ec<\/rt><span class=\"rb\">\u4e00\u500b<\/span><rt>y\u012b g\u00e8<\/rt><span class=\"rb\">\u6751\u838a<\/span><rt>c\u016bnzhu\u0101ng<\/rt><span class=\"rb\">\u548c<\/span><rt>h\u00e9<\/rt><span class=\"rb\">\u5996\u602a<\/span><rt>y\u0101ogu\u00e0i<\/rt><span class=\"rb\">\u6230\u9b25\u7684<\/span><rt>zh\u00e0nd\u00f2u de<\/rt><span class=\"rb\">\u6545\u4e8b<\/span><rt>g\u00f9sh\u00ec<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u8fd9\u90e8<\/span><rt>zh\u00e8 b\u00f9<\/rt><span class=\"rb\">\u7535\u5f71<\/span><rt>di\u00e0ny\u01d0ng<\/rt><span class=\"rb\">\u8bb2\u7684\u662f<\/span><rt>ji\u01ceng de sh\u00ec<\/rt><span class=\"rb\">\u4e00\u4e2a<\/span><rt>y\u012b g\u00e8<\/rt><span class=\"rb\">\u6751\u5e84<\/span><rt>c\u016bnzhu\u0101ng<\/rt><span class=\"rb\">\u548c<\/span><rt>h\u00e9<\/rt><span class=\"rb\">\u5996\u602a<\/span><rt>y\u0101ogu\u00e0i<\/rt><span class=\"rb\">\u6218\u6597\u7684<\/span><rt>zh\u00e0nd\u00f2u de<\/rt><span class=\"rb\">\u6545\u4e8b<\/span><rt>g\u00f9sh\u00ec<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">This movie tells the story of a village fighting against a monster.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5e72\u6d89<\/span><rt>g\u0101nsh\u00e8<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5e72\u6d89<\/span><rt>g\u0101nsh\u00e8<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">interference (physics)<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5149<\/span><rt>gu\u0101ng<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u5e72\u6d89<\/span><rt>g\u0101nsh\u00e8<\/rt><span class=\"rb\">\u73fe\u8c61<\/span><rt>xi\u00e0nxi\u00e0ng<\/rt><span class=\"rb\">\u53ef\u4ee5<\/span><rt>k\u011by\u01d0<\/rt><span class=\"rb\">\u7528\u4f86<\/span><rt>y\u00f2ngl\u00e1i<\/rt><span class=\"rb\">\u6e2c\u91cf<\/span><rt>c\u00e8li\u00e1ng<\/rt><span class=\"rb\">\u6975\u5c0f\u7684<\/span><rt>j\u00ed xi\u01ceo de<\/rt><span class=\"rb\">\u8ddd\u96e2<\/span><rt>j\u00f9l\u00ed<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5149<\/span><rt>gu\u0101ng<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u5e72\u6d89<\/span><rt>g\u0101nsh\u00e8<\/rt><span class=\"rb\">\u73b0\u8c61<\/span><rt>xi\u00e0nxi\u00e0ng<\/rt><span class=\"rb\">\u53ef\u4ee5<\/span><rt>k\u011by\u01d0<\/rt><span class=\"rb\">\u7528\u6765<\/span><rt>y\u00f2ngl\u00e1i<\/rt><span class=\"rb\">\u6d4b\u91cf<\/span><rt>c\u00e8li\u00e1ng<\/rt><span class=\"rb\">\u6781\u5c0f\u7684<\/span><rt>j\u00ed xi\u01ceo de<\/rt><span class=\"rb\">\u8ddd\u79bb<\/span><rt>j\u00f9l\u00ed<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">The interference of light can be used to measure extremely small distances.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u501f\u52a9<\/span><rt>ji\u00e8zh\u00f9<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u501f\u52a9<\/span><rt>ji\u00e8zh\u00f9<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">to make use of, with the help of<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u4ed6<\/span><rt>t\u0101<\/rt><span class=\"rb\">\u501f\u52a9<\/span><rt>ji\u00e8zh\u00f9<\/rt><span class=\"rb\">\u5b57\u5178<\/span><rt>z\u00ecdi\u01cen<\/rt><span class=\"rb\">\u8b80\u61c2\u4e86<\/span><rt>d\u00fad\u01d2ng le<\/rt><span class=\"rb\">\u9019\u7bc7<\/span><rt>zh\u00e8 pi\u0101n<\/rt><span class=\"rb\">\u6587\u7ae0<\/span><rt>w\u00e9nzh\u0101ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u4ed6<\/span><rt>t\u0101<\/rt><span class=\"rb\">\u501f\u52a9<\/span><rt>ji\u00e8zh\u00f9<\/rt><span class=\"rb\">\u5b57\u5178<\/span><rt>z\u00ecdi\u01cen<\/rt><span class=\"rb\">\u8bfb\u61c2\u4e86<\/span><rt>d\u00fad\u01d2ng le<\/rt><span class=\"rb\">\u8fd9\u7bc7<\/span><rt>zh\u00e8 pi\u0101n<\/rt><span class=\"rb\">\u6587\u7ae0<\/span><rt>w\u00e9nzh\u0101ng<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">He was able to understand the article with the help of a dictionary.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u4f4e\u983b<\/span><rt>d\u012bp\u00edn<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u4f4e\u9891<\/span><rt>d\u012bp\u00edn<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">low frequency<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u4f4e\u983b<\/span><rt>d\u012bp\u00edn<\/rt><span class=\"rb\">\u566a\u8072<\/span><rt>z\u00e0osh\u0113ng<\/rt><span class=\"rb\">\u5f88\u96e3<\/span><rt>h\u011bn n\u00e1n<\/rt><span class=\"rb\">\u88ab<\/span><rt>b\u00e8i<\/rt><span class=\"rb\">\u666e\u901a<\/span><rt>p\u01d4t\u014dng<\/rt><span class=\"rb\">\u8033\u585e<\/span><rt>\u011brs\u0101i<\/rt><span class=\"rb\">\u64cb\u4f4f<\/span><rt>d\u01cengzh\u00f9<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u4f4e\u9891<\/span><rt>d\u012bp\u00edn<\/rt><span class=\"rb\">\u566a\u58f0<\/span><rt>z\u00e0osh\u0113ng<\/rt><span class=\"rb\">\u5f88\u96be<\/span><rt>h\u011bn n\u00e1n<\/rt><span class=\"rb\">\u88ab<\/span><rt>b\u00e8i<\/rt><span class=\"rb\">\u666e\u901a<\/span><rt>p\u01d4t\u014dng<\/rt><span class=\"rb\">\u8033\u585e<\/span><rt>\u011brs\u0101i<\/rt><span class=\"rb\">\u6321\u4f4f<\/span><rt>d\u01cengzh\u00f9<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">Low-frequency noise is very hard for ordinary earplugs to block.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"flashcard\" data-pos=\"hidden\">\n      <div class=\"flashcard-inner\">\n        <div class=\"flashcard-face flashcard-front\">\n          <span class=\"flashcard-corner\">HSK 7&ndash;9<\/span>\n          <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u8033\u719f\u80fd\u8a73<\/span><rt>\u011brsh\u00fan\u00e9ngxi\u00e1ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u8033\u719f\u80fd\u8be6<\/span><rt>\u011brsh\u00fan\u00e9ngxi\u00e1ng<\/rt><\/ruby>\n          <span class=\"flashcard-hint\">Tap to flip<\/span>\n        <\/div>\n        <div class=\"flashcard-face flashcard-back\">\n          <p class=\"flashcard-gloss\">so familiar one knows it by heart<\/p>\n          <div class=\"flashcard-rule\"><\/div>\n          <p class=\"flashcard-example\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u9019\u9996<\/span><rt>zh\u00e8 sh\u01d2u<\/rt><span class=\"rb\">\u6b4c<\/span><rt>g\u0113<\/rt><span class=\"rb\">\u5e7e\u4e4e<\/span><rt>j\u012bh\u016b<\/rt><span class=\"rb\">\u4eba\u4eba<\/span><rt>r\u00e9nr\u00e9n<\/rt><span class=\"rb\">\u90fd<\/span><rt>d\u014du<\/rt><span class=\"rb\">\u8033\u719f\u80fd\u8a73<\/span><rt>\u011brsh\u00fan\u00e9ngxi\u00e1ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u8fd9\u9996<\/span><rt>zh\u00e8 sh\u01d2u<\/rt><span class=\"rb\">\u6b4c<\/span><rt>g\u0113<\/rt><span class=\"rb\">\u51e0\u4e4e<\/span><rt>j\u012bh\u016b<\/rt><span class=\"rb\">\u4eba\u4eba<\/span><rt>r\u00e9nr\u00e9n<\/rt><span class=\"rb\">\u90fd<\/span><rt>d\u014du<\/rt><span class=\"rb\">\u8033\u719f\u80fd\u8be6<\/span><rt>\u011brsh\u00fan\u00e9ngxi\u00e1ng<\/rt><\/ruby><\/p>\n          <p class=\"flashcard-en\">Almost everyone is familiar with this song.<\/p>\n        <\/div>\n      <\/div>\n    <\/div>\n\n  <\/div>\n\n  <div class=\"stack-nav\">\n    <button class=\"stack-prev\">&larr; Prev<\/button>\n    <span class=\"stack-counter\">1 \/ 8<\/span>\n    <button class=\"stack-next\">Next &rarr;<\/button>\n  <\/div>\n\n  <!-- ============ PASSAGE ============ -->\n  <h2 id=\"hsk79-passage\"><span class=\"ez-toc-section\" id=\"Reading_Passage\"><\/span>Reading Passage<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <div class=\"book-page\">\n    <div class=\"book-page-inner\">\n      <span class=\"book-mark\"><span class=\"lang-zh-TW\">\u9ad8\u9435\u964d\u566a\u982d\u9760<\/span><span class=\"lang-zh-CN\">\u9ad8\u94c1\u964d\u566a\u5934\u9760<\/span><\/span>\n      <div class=\"cover-wrap\">\n        <img decoding=\"async\" src=\"https:\/\/tiffanysmandarin.com\/wp-content\/uploads\/2026\/09\/\u9ad8\u94c1-1.jpg\" alt=\"\u9ad8\u94c1\u964d\u566a\u5934\u9760\" \/>\n      <\/div>\n      <p><span class=\"lang-zh-TW\">\u9ad8\u9435\u5df2\u6210\u70ba\u4eba\u5011\u5fc5\u4e0d\u53ef\u5c11\u7684\u4ea4\u901a\u5de5\u5177\u3002\u5fa9\u8208\u865f\u9ad8\u9435\u6301\u7e8c\u904b\u884c\u901f\u5ea6\u9054\u6bcf\u5c0f\u6642350\u516c\u91cc\uff0c\u8f15\u9b06\u5be6\u73fe\u65e5\u884c\u842c\u91cc\u3002\u8d8a\u4f86\u8d8a\u591a\u7684\u4eba\u5c07\u9ad8\u9435\u4f5c\u70ba\u51fa\u884c\u7684\u9996\u9078\u4ea4\u901a\u5de5\u5177\u3002\u7136\u800c\u9ad8\u9435\u6240\u7522\u751f\u7684\u566a\u8072\u537b\u8b93\u4eba\u64d4\u6182\u3002<\/span><span class=\"lang-zh-CN\">\u9ad8\u94c1\u5df2\u6210\u4e3a\u4eba\u4eec\u5fc5\u4e0d\u53ef\u5c11\u7684\u4ea4\u901a\u5de5\u5177\u3002\u590d\u5174\u53f7\u9ad8\u94c1\u6301\u7eed\u8fd0\u884c\u901f\u5ea6\u8fbe\u6bcf\u5c0f\u65f6350\u516c\u91cc\uff0c\u8f7b\u677e\u5b9e\u73b0\u65e5\u884c\u4e07\u91cc\u3002\u8d8a\u6765\u8d8a\u591a\u7684\u4eba\u5c06\u9ad8\u94c1\u4f5c\u4e3a\u51fa\u884c\u7684\u9996\u9009\u4ea4\u901a\u5de5\u5177\u3002\u7136\u800c\u9ad8\u94c1\u6240\u4ea7\u751f\u7684\u566a\u58f0\u5374\u8ba9\u4eba\u62c5\u5fe7\u3002<\/span><\/p>\n      <p><span class=\"lang-zh-TW\">\u9ad8\u9435\u566a\u8072\u7684\u4f86\u6e90\u6709\u53d7\u96fb\u5f13\u566a\u8072\u3001\u8eca\u982d\u7a7a\u6c23\u52d5\u529b\u566a\u8072\u3001\u8eca\u8f1b\u4e0a\u90e8\u7a7a\u6c23\u52d5\u529b\u566a\u8072\u3001\u8eca\u8f1b\u4e0b\u90e8\u566a\u8072\u548c\u7d50\u69cb\u566a\u8072\u7b49\uff0c\u6bd4\u5982\u6211\u5011\u300c\u8033\u719f\u80fd\u8a73\u300d\u7684\u92fc\u8ecc\u6469\u64e6\u8072\u5c31\u5c6c\u65bc\u5176\u4e2d\u4e00\u7a2e\u3002\u5c0d\u9019\u4e9b\u9ad8\u9435\u904b\u884c\u800c\u7522\u751f\u7684\u566a\u8072\uff0c\u6211\u5011\u65e2\u7121\u6cd5\u8b93\u8eca\u8f2a\u8207\u8eca\u5ec2\u5206\u96e2\uff0c\u4e5f\u7121\u6cd5\u8b93\u98a8\u505c\u6b62\u6b4c\u5531\uff0c\u53ea\u80fd\u6234\u4e0a\u8033\u6a5f\u3002\u53ef\u662f\u9577\u6642\u9593\u6234\u8033\u6a5f\u4e26\u4e0d\u8212\u670d\u3002<\/span><span class=\"lang-zh-CN\">\u9ad8\u94c1\u566a\u58f0\u7684\u6765\u6e90\u6709\u53d7\u7535\u5f13\u566a\u58f0\u3001\u8f66\u5934\u7a7a\u6c14\u52a8\u529b\u566a\u58f0\u3001\u8f66\u8f86\u4e0a\u90e8\u7a7a\u6c14\u52a8\u529b\u566a\u58f0\u3001\u8f66\u8f86\u4e0b\u90e8\u566a\u58f0\u548c\u7ed3\u6784\u566a\u58f0\u7b49\uff0c\u6bd4\u5982\u6211\u4eec\u201c\u8033\u719f\u80fd\u8be6\u201d\u7684\u94a2\u8f68\u6469\u64e6\u58f0\u5c31\u5c5e\u4e8e\u5176\u4e2d\u4e00\u79cd\u3002\u5bf9\u8fd9\u4e9b\u9ad8\u94c1\u8fd0\u884c\u800c\u4ea7\u751f\u7684\u566a\u58f0\uff0c\u6211\u4eec\u65e2\u65e0\u6cd5\u8ba9\u8f66\u8f6e\u4e0e\u8f66\u53a2\u5206\u79bb\uff0c\u4e5f\u65e0\u6cd5\u8ba9\u98ce\u505c\u6b62\u6b4c\u5531\uff0c\u53ea\u80fd\u6234\u4e0a\u8033\u673a\u3002\u53ef\u662f\u957f\u65f6\u95f4\u6234\u8033\u673a\u5e76\u4e0d\u8212\u670d\u3002<\/span><\/p>\n      <p><span class=\"lang-zh-TW\">\u600e\u9ebc\u8fa6\u5462\uff1f\u79d1\u5b78\u5bb6\u5011\u7814\u88fd\u4e86\u4e00\u7a2e\u964d\u566a\u982d\u9760\uff0c\u53ef\u4ee5\u9032\u884c\u4e3b\u52d5\u964d\u566a\uff0c\u964d\u4f4e\u9ad8\u9435\u566a\u8072\u4e2d\u7684\u4f4e\u983b\u90e8\u5206\u3002\u964d\u566a\u982d\u9760\u53ef\u4ee5\u5f62\u6210\u4e00\u500b\u4fdd\u8b77\u5340\uff0c\u5373\u964d\u566a\u5340\u57df\uff0c\u53ea\u8981\u4e58\u5ba2\u5011\u5728\u964d\u566a\u5340\u57df\uff0c\u807d\u5230\u7684\u566a\u8072\u5c31\u6703\u6e1b\u5c0f\uff0c\u5f9e\u800c\u53ef\u4ee5\u514d\u53d7\u566a\u8072\u300c\u5996\u602a\u300d\u7684\u5e72\u64fe\u3002<\/span><span class=\"lang-zh-CN\">\u600e\u4e48\u529e\u5462\uff1f\u79d1\u5b66\u5bb6\u4eec\u7814\u5236\u4e86\u4e00\u79cd\u964d\u566a\u5934\u9760\uff0c\u53ef\u4ee5\u8fdb\u884c\u4e3b\u52a8\u964d\u566a\uff0c\u964d\u4f4e\u9ad8\u94c1\u566a\u58f0\u4e2d\u7684\u4f4e\u9891\u90e8\u5206\u3002\u964d\u566a\u5934\u9760\u53ef\u4ee5\u5f62\u6210\u4e00\u4e2a\u4fdd\u62a4\u533a\uff0c\u5373\u964d\u566a\u533a\u57df\uff0c\u53ea\u8981\u4e58\u5ba2\u4eec\u5728\u964d\u566a\u533a\u57df\uff0c\u542c\u5230\u7684\u566a\u58f0\u5c31\u4f1a\u51cf\u5c0f\uff0c\u4ece\u800c\u53ef\u4ee5\u514d\u53d7\u566a\u58f0\u201c\u5996\u602a\u201d\u7684\u5e72\u6270\u3002<\/span><\/p>\n      <p><span class=\"lang-zh-TW\">\u964d\u566a\u982d\u9760\u662f\u600e\u6a23\u5f62\u6210\u964d\u566a\u5340\u7684\u5462\uff1f\u7b54\u6848\u662f\u501f\u52a9\u63da\u8072\u5668\uff0c\u4e5f\u5c31\u662f\u4fd7\u7a31\u7684\u300c\u5927\u5587\u53ed\u300d\u3002\u79d1\u5b78\u5bb6\u5011\u5728\u5ea7\u6905\u5468\u570d\u653e\u7f6e\u591a\u500b\u63da\u8072\u5668\uff0c\u767c\u51fa\u7279\u5b9a\u7684\u8072\u6ce2\u4f86\u62b5\u6d88\u566a\u8072\u3002\u5c31\u50cf\u6b66\u4fe0\u5c0f\u8aaa\u88e1\u7684\u4ee5\u6bd2\u653b\u6bd2\uff0c\u964d\u566a\u982d\u9760\u662f\u4ee5\u8072\u6d88\u8072\uff0c\u5229\u7528\u8072\u6ce2\u4f86\u62b5\u6d88\u566a\u8072\u3002<\/span><span class=\"lang-zh-CN\">\u964d\u566a\u5934\u9760\u662f\u600e\u6837\u5f62\u6210\u964d\u566a\u533a\u7684\u5462\uff1f\u7b54\u6848\u662f\u501f\u52a9\u626c\u58f0\u5668\uff0c\u4e5f\u5c31\u662f\u4fd7\u79f0\u7684\u201c\u5927\u5587\u53ed\u201d\u3002\u79d1\u5b66\u5bb6\u4eec\u5728\u5ea7\u6905\u5468\u56f4\u653e\u7f6e\u591a\u4e2a\u626c\u58f0\u5668\uff0c\u53d1\u51fa\u7279\u5b9a\u7684\u58f0\u6ce2\u6765\u62b5\u6d88\u566a\u58f0\u3002\u5c31\u50cf\u6b66\u4fa0\u5c0f\u8bf4\u91cc\u7684\u4ee5\u6bd2\u653b\u6bd2\uff0c\u964d\u566a\u5934\u9760\u662f\u4ee5\u58f0\u6d88\u58f0\uff0c\u5229\u7528\u58f0\u6ce2\u6765\u62b5\u6d88\u566a\u58f0\u3002<\/span><\/p>\n      <p><span class=\"lang-zh-TW\">\u4ee5\u8072\u6d88\u8072\uff0c\u4e3b\u8981\u662f\u5229\u7528\u8072\u6ce2\u7684\u76f8\u6d88\u6027\u5e72\u6d89\u539f\u7406\uff0c\u5373\u5169\u5217\u983b\u7387\u76f8\u540c\u3001\u76f8\u4f4d\u76f8\u53cd\u7684\u8072\u6ce2\u758a\u52a0\uff0c\u8072\u6ce2\u5e45\u503c\u5c31\u6703\u6e1b\u5c0f\u3002\u63da\u8072\u5668\u767c\u51fa\u7684\u6b63\u662f\u8207\u566a\u8072\u8072\u6ce2\u76f8\u4f4d\u76f8\u53cd\u7684\u8072\u6ce2\uff0c\u566a\u8072\u8072\u6ce2\u8207\u63da\u8072\u5668\u767c\u51fa\u7684\u8072\u6ce2\u758a\u52a0\uff0c\u8a72\u5340\u57df\u7684\u8072\u6ce2\u5e45\u503c\u4fbf\u6e1b\u5c0f\uff0c\u4eba\u5011\u807d\u5230\u7684\u8072\u97f3\u4e5f\u5c31\u6e1b\u5c0f\u4e86\u3002<\/span><span class=\"lang-zh-CN\">\u4ee5\u58f0\u6d88\u58f0\uff0c\u4e3b\u8981\u662f\u5229\u7528\u58f0\u6ce2\u7684\u76f8\u6d88\u6027\u5e72\u6d89\u539f\u7406\uff0c\u5373\u4e24\u5217\u9891\u7387\u76f8\u540c\u3001\u76f8\u4f4d\u76f8\u53cd\u7684\u58f0\u6ce2\u53e0\u52a0\uff0c\u58f0\u6ce2\u5e45\u503c\u5c31\u4f1a\u51cf\u5c0f\u3002\u626c\u58f0\u5668\u53d1\u51fa\u7684\u6b63\u662f\u4e0e\u566a\u58f0\u58f0\u6ce2\u76f8\u4f4d\u76f8\u53cd\u7684\u58f0\u6ce2\uff0c\u566a\u58f0\u58f0\u6ce2\u4e0e\u626c\u58f0\u5668\u53d1\u51fa\u7684\u58f0\u6ce2\u53e0\u52a0\uff0c\u8be5\u533a\u57df\u7684\u58f0\u6ce2\u5e45\u503c\u4fbf\u51cf\u5c0f\uff0c\u4eba\u4eec\u542c\u5230\u7684\u58f0\u97f3\u4e5f\u5c31\u51cf\u5c0f\u4e86\u3002<\/span><\/p>\n      <p><span class=\"lang-zh-TW\">\u9ad8\u9435\u566a\u8072\u7a2e\u985e\u9019\u9ebc\u591a\uff0c\u964d\u566a\u982d\u9760\u90fd\u80fd\u6d88\u9664\u55ce\uff1f\u70ba\u4e86\u8b93\u4e58\u5ba2\u514d\u53d7\u9019\u4e9b\u566a\u8072\u7684\u5e72\u64fe\uff0c\u964d\u566a\u982d\u9760\u53ef\u4ee5\u505a\u5230\u5175\u4f86\u5c07\u64cb\uff0c\u6c34\u4f86\u571f\u63a9\u3002\u7531\u65bc\u964d\u566a\u982d\u9760\u7684\u6838\u5fc3\u63a7\u5236\u5668\u5177\u6709\u81ea\u9069\u61c9\u6f14\u7b97\u6cd5\uff0c\u56e0\u6b64\u80fd\u5920\u76e3\u6e2c\u566a\u8072\uff0c\u4e26\u91dd\u5c0d\u4e0d\u540c\u7684\u566a\u8072\u8a2d\u8a08\u767c\u51fa\u76f8\u61c9\u7684\u8072\u6ce2\uff0c\u4ee5\u5be6\u73fe\u66f4\u6709\u6548\u7684\u964d\u566a\u3002\u7121\u566a\u8072\u6642\uff0c\u964d\u566a\u982d\u9760\u662f\u4e0d\u767c\u8072\u7684\u3002<\/span><span class=\"lang-zh-CN\">\u9ad8\u94c1\u566a\u58f0\u79cd\u7c7b\u8fd9\u4e48\u591a\uff0c\u964d\u566a\u5934\u9760\u90fd\u80fd\u6d88\u9664\u5417\uff1f\u4e3a\u4e86\u8ba9\u4e58\u5ba2\u514d\u53d7\u8fd9\u4e9b\u566a\u58f0\u7684\u5e72\u6270\uff0c\u964d\u566a\u5934\u9760\u53ef\u4ee5\u505a\u5230\u5175\u6765\u5c06\u6321\uff0c\u6c34\u6765\u571f\u63a9\u3002\u7531\u4e8e\u964d\u566a\u5934\u9760\u7684\u6838\u5fc3\u63a7\u5236\u5668\u5177\u6709\u81ea\u9002\u5e94\u7b97\u6cd5\uff0c\u56e0\u6b64\u80fd\u591f\u76d1\u6d4b\u566a\u58f0\uff0c\u5e76\u9488\u5bf9\u4e0d\u540c\u7684\u566a\u58f0\u8bbe\u8ba1\u53d1\u51fa\u76f8\u5e94\u7684\u58f0\u6ce2\uff0c\u4ee5\u5b9e\u73b0\u66f4\u6709\u6548\u7684\u964d\u566a\u3002\u65e0\u566a\u58f0\u65f6\uff0c\u964d\u566a\u5934\u9760\u662f\u4e0d\u53d1\u58f0\u7684\u3002<\/span><\/p>\n      <p><span class=\"lang-zh-TW\">\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u964d\u566a\u982d\u9760\u964d\u4f4e\u7684\u662f\u9ad8\u9435\u566a\u8072\u4e2d\u7684\u4f4e\u983b\u90e8\u5206\uff0c\u5c6c\u65bc\u4e3b\u52d5\u964d\u566a\u6280\u8853\uff1b\u566a\u8072\u7684\u9ad8\u983b\u90e8\u5206\u4e00\u822c\u4f7f\u7528\u5438\u8072\u6750\u6599\u9032\u884c\u964d\u566a\uff0c\u5c6c\u65bc\u88ab\u52d5\u964d\u566a\u6280\u8853\u3002<\/span><span class=\"lang-zh-CN\">\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u964d\u566a\u5934\u9760\u964d\u4f4e\u7684\u662f\u9ad8\u94c1\u566a\u58f0\u4e2d\u7684\u4f4e\u9891\u90e8\u5206\uff0c\u5c5e\u4e8e\u4e3b\u52a8\u964d\u566a\u6280\u672f\uff1b\u566a\u58f0\u7684\u9ad8\u9891\u90e8\u5206\u4e00\u822c\u4f7f\u7528\u5438\u58f0\u6750\u6599\u8fdb\u884c\u964d\u566a\uff0c\u5c5e\u4e8e\u88ab\u52a8\u964d\u566a\u6280\u672f\u3002<\/span><\/p>\n      <p><span class=\"lang-zh-TW\">\u795e\u5947\u7684\u964d\u566a\u982d\u9760\u900f\u904e\u4ee5\u8072\u6d88\u8072\uff0c\u9084\u60a8\u6e05\u975c\u3002\u76ee\u524d\uff0c\u4e2d\u570b\u79d1\u5b78\u9662\u566a\u8072\u8207\u632f\u52d5\u91cd\u9ede\u5be6\u9a57\u5ba4\u5df2\u7d93\u5b8c\u6210\u4e86\u964d\u566a\u982d\u9760\u7684\u5be6\u9a57\u90e8\u5206\uff0c\u8b93\u6211\u5011\u671f\u5f85\u9ad8\u9435\u4e0a\u7684\u964d\u566a\u982d\u9760\u53ef\u4ee5\u65e9\u65e5\u548c\u5927\u5bb6\u898b\u9762\uff01<\/span><span class=\"lang-zh-CN\">\u795e\u5947\u7684\u964d\u566a\u5934\u9760\u901a\u8fc7\u4ee5\u58f0\u6d88\u58f0\uff0c\u8fd8\u60a8\u6e05\u9759\u3002\u76ee\u524d\uff0c\u4e2d\u56fd\u79d1\u5b66\u9662\u566a\u58f0\u4e0e\u632f\u52a8\u91cd\u70b9\u5b9e\u9a8c\u5ba4\u5df2\u7ecf\u5b8c\u6210\u4e86\u964d\u566a\u5934\u9760\u7684\u5b9e\u9a8c\u90e8\u5206\uff0c\u8ba9\u6211\u4eec\u671f\u5f85\u9ad8\u94c1\u4e0a\u7684\u964d\u566a\u5934\u9760\u53ef\u4ee5\u65e9\u65e5\u548c\u5927\u5bb6\u89c1\u9762\uff01<\/span><\/p>\n    <\/div>\n  <\/div>\n\n  <div class=\"toggle-card\">\n    <div class=\"toggle-switch\">\n      <button class=\"toggle-btn active\" data-pane=\"hsk79-pane-pinyin\">Pinyin<\/button>\n      <button class=\"toggle-btn\" data-pane=\"hsk79-pane-english\">English<\/button>\n    <\/div>\n\n    <div class=\"toggle-pane active\" id=\"hsk79-pane-pinyin\">\n      <p>G\u0101oti\u011b y\u01d0 ch\u00e9ngw\u00e9i r\u00e9nmen b\u00ecb\u00f9k\u011bsh\u01ceo de ji\u0101ot\u014dng g\u014dngj\u00f9. F\u00f9x\u012bng h\u00e0o g\u0101oti\u011b ch\u00edx\u00f9 y\u00f9nx\u00edng s\u00f9d\u00f9 d\u00e1 m\u011bi xi\u01ceosh\u00ed s\u0101n b\u01cei w\u01d4sh\u00ed g\u014dngl\u01d0, q\u012bngs\u014dng sh\u00edxi\u00e0n r\u00ec x\u00edng w\u00e0n l\u01d0. Yu\u00e8 l\u00e1i yu\u00e8 du\u014d de r\u00e9n ji\u0101ng g\u0101oti\u011b zu\u00f2w\u00e9i ch\u016bx\u00edng de sh\u01d2uxu\u01cen ji\u0101ot\u014dng g\u014dngj\u00f9. R\u00e1n&#8217;\u00e9r g\u0101oti\u011b su\u01d2 ch\u01censh\u0113ng de z\u00e0osh\u0113ng qu\u00e8 r\u00e0ng r\u00e9n d\u0101ny\u014du.<\/p>\n      <p>G\u0101oti\u011b z\u00e0osh\u0113ng de l\u00e1iyu\u00e1n y\u01d2u sh\u00f2udi\u00e0ng\u014dng z\u00e0osh\u0113ng, ch\u0113t\u00f3u k\u014dngq\u00ec d\u00f2ngl\u00ec z\u00e0osh\u0113ng, ch\u0113li\u00e0ng sh\u00e0ngb\u00f9 k\u014dngq\u00ec d\u00f2ngl\u00ec z\u00e0osh\u0113ng, ch\u0113li\u00e0ng xi\u00e0b\u00f9 z\u00e0osh\u0113ng h\u00e9 ji\u00e9g\u00f2u z\u00e0osh\u0113ng d\u011bng, b\u01d0r\u00fa w\u01d2men &#8220;\u011brsh\u00fan\u00e9ngxi\u00e1ng&#8221; de g\u0101nggu\u01d0 m\u00f3c\u0101 sh\u0113ng ji\u00f9 sh\u01d4y\u00fa q\u00edzh\u014dng y\u012b zh\u01d2ng. Du\u00ec zh\u00e8xi\u0113 g\u0101oti\u011b y\u00f9nx\u00edng \u00e9r ch\u01censh\u0113ng de z\u00e0osh\u0113ng, w\u01d2men j\u00ec w\u00faf\u01ce r\u00e0ng ch\u0113l\u00fan y\u01d4 ch\u0113xi\u0101ng f\u0113nl\u00ed, y\u011b w\u00faf\u01ce r\u00e0ng f\u0113ng t\u00edngzh\u01d0 g\u0113ch\u00e0ng, zh\u01d0 n\u00e9ng d\u00e0i sh\u00e0ng \u011brj\u012b. K\u011bsh\u00ec ch\u00e1ng sh\u00edji\u0101n d\u00e0i \u011brj\u012b b\u00ecng b\u00f9 sh\u016bfu.<\/p>\n      <p>Z\u011bnme b\u00e0n ne? K\u0113xu\u00e9ji\u0101men y\u00e1nzh\u00ec le y\u012b zh\u01d2ng ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o, k\u011by\u01d0 j\u00ecnx\u00edng zh\u01d4d\u00f2ng ji\u00e0ngz\u00e0o, ji\u00e0ngd\u012b g\u0101oti\u011b z\u00e0osh\u0113ng zh\u014dng de d\u012bp\u00edn b\u00f9fen. Ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o k\u011by\u01d0 x\u00edngch\u00e9ng y\u012b g\u00e8 b\u01ceoh\u00f9q\u016b, j\u00ed ji\u00e0ngz\u00e0o q\u016by\u00f9, zh\u01d0y\u00e0o ch\u00e9ngk\u00e8men z\u00e0i ji\u00e0ngz\u00e0o q\u016by\u00f9, t\u012bng d\u00e0o de z\u00e0osh\u0113ng ji\u00f9 hu\u00ec ji\u01cenxi\u01ceo, c\u00f3ng&#8217;\u00e9r k\u011by\u01d0 mi\u01cen sh\u00f2u z\u00e0osh\u0113ng &#8220;y\u0101ogu\u00e0i&#8221; de g\u0101nr\u01ceo.<\/p>\n      <p>Ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o sh\u00ec z\u011bny\u00e0ng x\u00edngch\u00e9ng ji\u00e0ngz\u00e0o q\u016b de ne? D\u00e1&#8217;\u00e0n sh\u00ec ji\u00e8zh\u00f9 y\u00e1ngsh\u0113ngq\u00ec, y\u011b ji\u00f9sh\u00ec s\u00fach\u0113ng de &#8220;d\u00e0 l\u01ceba&#8221;. K\u0113xu\u00e9ji\u0101men z\u00e0i zu\u00f2y\u01d0 zh\u014duw\u00e9i f\u00e0ngzh\u00ec du\u014d g\u00e8 y\u00e1ngsh\u0113ngq\u00ec, f\u0101ch\u016b t\u00e8d\u00ecng de sh\u0113ngb\u014d l\u00e1i d\u01d0xi\u0101o z\u00e0osh\u0113ng. Ji\u00f9 xi\u00e0ng w\u01d4xi\u00e1 xi\u01ceoshu\u014d l\u01d0 de y\u01d0 d\u00fa g\u014dng d\u00fa, ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o sh\u00ec y\u01d0 sh\u0113ng xi\u0101o sh\u0113ng, l\u00ecy\u00f2ng sh\u0113ngb\u014d l\u00e1i d\u01d0xi\u0101o z\u00e0osh\u0113ng.<\/p>\n      <p>Y\u01d0 sh\u0113ng xi\u0101o sh\u0113ng, zh\u01d4y\u00e0o sh\u00ec l\u00ecy\u00f2ng sh\u0113ngb\u014d de xi\u0101ngxi\u0101ox\u00ecng g\u0101nsh\u00e8 yu\u00e1nl\u01d0, j\u00ed li\u01ceng li\u00e8 p\u00ednl\u01dc xi\u0101ngt\u00f3ng, xi\u00e0ngw\u00e8i xi\u0101ngf\u01cen de sh\u0113ngb\u014d di\u00e9ji\u0101, sh\u0113ngb\u014d f\u00fazh\u00ed ji\u00f9 hu\u00ec ji\u01cenxi\u01ceo. Y\u00e1ngsh\u0113ngq\u00ec f\u0101ch\u016b de zh\u00e8ng sh\u00ec y\u01d4 z\u00e0osh\u0113ng sh\u0113ngb\u014d xi\u00e0ngw\u00e8i xi\u0101ngf\u01cen de sh\u0113ngb\u014d, z\u00e0osh\u0113ng sh\u0113ngb\u014d y\u01d4 y\u00e1ngsh\u0113ngq\u00ec f\u0101ch\u016b de sh\u0113ngb\u014d di\u00e9ji\u0101, g\u0101i q\u016by\u00f9 de sh\u0113ngb\u014d f\u00fazh\u00ed bi\u00e0n ji\u01cenxi\u01ceo, r\u00e9nmen t\u012bng d\u00e0o de sh\u0113ngy\u012bn y\u011b ji\u00f9 ji\u01cenxi\u01ceo le.<\/p>\n      <p>G\u0101oti\u011b z\u00e0osh\u0113ng zh\u01d2ngl\u00e8i zh\u00e8me du\u014d, ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o d\u014du n\u00e9ng xi\u0101och\u00fa ma? W\u00e8ile r\u00e0ng ch\u00e9ngk\u00e8 mi\u01cen sh\u00f2u zh\u00e8xi\u0113 z\u00e0osh\u0113ng de g\u0101nr\u01ceo, ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o k\u011by\u01d0 zu\u00f2d\u00e0o b\u012bng l\u00e1i ji\u00e0ng d\u01ceng, shu\u01d0 l\u00e1i t\u01d4 y\u01cen. Y\u00f3uy\u00fa ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o de h\u00e9x\u012bn k\u00f2ngzh\u00ecq\u00ec j\u00f9y\u01d2u z\u00ec sh\u00ecy\u00ecng su\u00e0nf\u01ce, y\u012bnc\u01d0 n\u00e9ngg\u00f2u ji\u0101nc\u00e8 z\u00e0osh\u0113ng, b\u00ecng zh\u0113ndu\u00ec b\u00f9t\u00f3ng de z\u00e0osh\u0113ng sh\u00e8j\u00ec f\u0101ch\u016b xi\u0101ngy\u00ecng de sh\u0113ngb\u014d, y\u01d0 sh\u00edxi\u00e0n g\u00e8ng y\u01d2uxi\u00e0o de ji\u00e0ngz\u00e0o. W\u00fa z\u00e0osh\u0113ng sh\u00ed, ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o sh\u00ec b\u00f9 f\u0101sh\u0113ng de.<\/p>\n      <p>Zh\u00edde zh\u00f9y\u00ec de sh\u00ec, ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o ji\u00e0ngd\u012b de sh\u00ec g\u0101oti\u011b z\u00e0osh\u0113ng zh\u014dng de d\u012bp\u00edn b\u00f9fen, sh\u01d4y\u00fa zh\u01d4d\u00f2ng ji\u00e0ngz\u00e0o j\u00ecsh\u00f9; z\u00e0osh\u0113ng de g\u0101op\u00edn b\u00f9fen y\u012bb\u0101n sh\u01d0y\u00f2ng x\u012bsh\u0113ng c\u00e1ili\u00e0o j\u00ecnx\u00edng ji\u00e0ngz\u00e0o, sh\u01d4y\u00fa b\u00e8id\u00f2ng ji\u00e0ngz\u00e0o j\u00ecsh\u00f9.<\/p>\n      <p>Sh\u00e9nq\u00ed de ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o t\u014dnggu\u00f2 y\u01d0 sh\u0113ng xi\u0101o sh\u0113ng, hu\u00e1n n\u00edn q\u012bngj\u00ecng. M\u00f9qi\u00e1n, Zh\u014dnggu\u00f3 K\u0113xu\u00e9yu\u00e0n Z\u00e0osh\u0113ng Y\u01d4 Zh\u00e8nd\u00f2ng Zh\u00f2ngdi\u01cen Sh\u00edy\u00e0nsh\u00ec y\u01d0j\u012bng w\u00e1nch\u00e9ng le ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o de sh\u00edy\u00e0n b\u00f9fen, r\u00e0ng w\u01d2men q\u00edd\u00e0i g\u0101oti\u011b sh\u00e0ng de ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o k\u011by\u01d0 z\u01ceor\u00ec h\u00e9 d\u00e0ji\u0101 ji\u00e0nmi\u00e0n!<\/p>\n    <\/div>\n\n    <div class=\"toggle-pane\" id=\"hsk79-pane-english\">\n      <p>High-speed rail has become an indispensable means of transportation. The Fuxing high-speed train runs continuously at speeds of up to 350 kilometers per hour, easily achieving &#8220;a thousand miles in a day.&#8221; More and more people are choosing high-speed rail as their preferred mode of travel. However, the noise produced by high-speed trains has become a source of concern.<\/p>\n      <p>The sources of high-speed rail noise include pantograph noise, front-end aerodynamic noise, upper-body aerodynamic noise, lower-body noise, and structural noise, among others &mdash; for example, the familiar sound of rail friction is one such type. Facing this noise, we can&#8217;t separate the wheels from the carriage, nor can we make the wind stop &#8220;singing&#8221; &mdash; all we can do is put on headphones. But wearing headphones for long periods isn&#8217;t comfortable.<\/p>\n      <p>So what can be done? Scientists have developed a noise-reducing headrest that performs active noise cancellation, reducing the low-frequency portion of high-speed rail noise. The headrest creates a protective zone &mdash; a noise-reduction zone &mdash; and as long as passengers stay within it, the noise they hear is reduced, sparing them from the disturbance of this noise &#8220;monster.&#8221;<\/p>\n      <p>How does the headrest create this zone? The answer lies in speakers &mdash; commonly known as &#8220;loudspeakers.&#8221; Scientists place multiple speakers around the seat that emit specific sound waves to cancel out the noise. Like the idea of &#8220;fighting poison with poison&#8221; in martial arts novels, the headrest cancels sound with sound, using sound waves to offset the noise.<\/p>\n      <p>Canceling sound with sound mainly relies on the principle of destructive interference &mdash; when two waves of the same frequency but opposite phase overlap, their amplitude decreases. The speakers emit sound waves exactly out of phase with the noise; when the noise waves and the speaker&#8217;s waves overlap, the amplitude in that area decreases, and the sound people hear becomes quieter.<\/p>\n      <p>With so many types of high-speed rail noise, can the headrest cancel them all? To spare passengers from this disturbance, the headrest can adapt to whatever noise arises. Because its core controller has a self-adaptive algorithm, it can monitor noise and generate the corresponding sound wave for each type, achieving more effective noise reduction. When there is no noise, the headrest stays silent.<\/p>\n      <p>It&#8217;s worth noting that the headrest reduces the low-frequency portion of high-speed rail noise &mdash; a form of active noise reduction. The high-frequency portion is generally reduced using sound-absorbing materials, a form of passive noise reduction.<\/p>\n      <p>This remarkable noise-reducing headrest cancels sound with sound, giving you back your peace and quiet. Currently, the Key Laboratory of Noise and Vibration at the Chinese Academy of Sciences has completed the experimental phase of the headrest, and we look forward to seeing it appear on high-speed trains soon!<\/p>\n    <\/div>\n  <\/div>\n\n  <!-- ============ QUESTIONS ============ -->\n  <h2 id=\"hsk79-questions\"><span class=\"ez-toc-section\" id=\"Comprehension_Questions\"><\/span>Comprehension Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n  <div class=\"quiz-shell\">\n    <div class=\"quiz-progress\">Question 1 of 6<\/div>\n\n    <!-- Q1 -->\n    <div class=\"quiz-card active\" data-index=\"0\">\n      <p class=\"quiz-q\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u4e0b\u5217<\/span><rt>xi\u00e0li\u00e8<\/rt><span class=\"rb\">\u54ea\u9805<\/span><rt>n\u01cexi\u00e0ng<\/rt><span class=\"rb\">\u4e0d\u662f<\/span><rt>b\u00f9sh\u00ec<\/rt><span class=\"rb\">\u9ad8\u9435<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u566a\u8072<\/span><rt>z\u00e0osh\u0113ng<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u4f86\u6e90<\/span><rt>l\u00e1iyu\u00e1n<\/rt><span class=\"rb\">\uff1f<\/span><rt><\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u4e0b\u5217<\/span><rt>xi\u00e0li\u00e8<\/rt><span class=\"rb\">\u54ea\u9879<\/span><rt>n\u01cexi\u00e0ng<\/rt><span class=\"rb\">\u4e0d\u662f<\/span><rt>b\u00f9sh\u00ec<\/rt><span class=\"rb\">\u9ad8\u94c1<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u566a\u58f0<\/span><rt>z\u00e0osh\u0113ng<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u6765\u6e90<\/span><rt>l\u00e1iyu\u00e1n<\/rt><span class=\"rb\">\uff1f<\/span><rt><\/rt><\/ruby><\/p>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u53d7\u96fb\u5f13<\/span><rt>sh\u00f2udi\u00e0ng\u014dng<\/rt><span class=\"rb\">\u566a\u8072<\/span><rt>z\u00e0osh\u0113ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u53d7\u7535\u5f13<\/span><rt>sh\u00f2udi\u00e0ng\u014dng<\/rt><span class=\"rb\">\u566a\u58f0<\/span><rt>z\u00e0osh\u0113ng<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u92fc\u8ecc<\/span><rt>g\u0101nggu\u01d0<\/rt><span class=\"rb\">\u6469\u64e6\u8072<\/span><rt>m\u00f3c\u0101sh\u0113ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u94a2\u8f68<\/span><rt>g\u0101nggu\u01d0<\/rt><span class=\"rb\">\u6469\u64e6\u58f0<\/span><rt>m\u00f3c\u0101sh\u0113ng<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u7a7a\u6c23<\/span><rt>k\u014dngq\u00ec<\/rt><span class=\"rb\">\u52d5\u529b<\/span><rt>d\u00f2ngl\u00ec<\/rt><span class=\"rb\">\u566a\u8072<\/span><rt>z\u00e0osh\u0113ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u7a7a\u6c14<\/span><rt>k\u014dngq\u00ec<\/rt><span class=\"rb\">\u52a8\u529b<\/span><rt>d\u00f2ngl\u00ec<\/rt><span class=\"rb\">\u566a\u58f0<\/span><rt>z\u00e0osh\u0113ng<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\" data-correct=\"true\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u767c\u52d5\u6a5f<\/span><rt>f\u0101d\u00f2ngj\u012b<\/rt><span class=\"rb\">\u904b\u884c<\/span><rt>y\u00f9nx\u00edng<\/rt><span class=\"rb\">\u566a\u8072<\/span><rt>z\u00e0osh\u0113ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u53d1\u52a8\u673a<\/span><rt>f\u0101d\u00f2ngj\u012b<\/rt><span class=\"rb\">\u8fd0\u884c<\/span><rt>y\u00f9nx\u00edng<\/rt><span class=\"rb\">\u566a\u58f0<\/span><rt>z\u00e0osh\u0113ng<\/rt><\/ruby><\/button>\n      <div class=\"quiz-explain\">The passage lists pantograph noise, aerodynamic noise, and structural noise (including rail friction) as sources &mdash; engine-running noise is never mentioned.<\/div>\n    <\/div>\n\n    <!-- Q2 -->\n    <div class=\"quiz-card\" data-index=\"1\">\n      <p class=\"quiz-q\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u4e0b\u5217<\/span><rt>xi\u00e0li\u00e8<\/rt><span class=\"rb\">\u54ea\u9805<\/span><rt>n\u01cexi\u00e0ng<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\u5f62\u6210<\/span><rt>x\u00edngch\u00e9ng<\/rt><span class=\"rb\">\u964d\u566a\u5340<\/span><rt>ji\u00e0ngz\u00e0oq\u016b<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u539f\u7406<\/span><rt>yu\u00e1nl\u01d0<\/rt><span class=\"rb\">\uff1f<\/span><rt><\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u4e0b\u5217<\/span><rt>xi\u00e0li\u00e8<\/rt><span class=\"rb\">\u54ea\u9879<\/span><rt>n\u01cexi\u00e0ng<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\u5f62\u6210<\/span><rt>x\u00edngch\u00e9ng<\/rt><span class=\"rb\">\u964d\u566a\u533a<\/span><rt>ji\u00e0ngz\u00e0oq\u016b<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u539f\u7406<\/span><rt>yu\u00e1nl\u01d0<\/rt><span class=\"rb\">\uff1f<\/span><rt><\/rt><\/ruby><\/p>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5fc3\u7406\u5b78<\/span><rt>x\u012bnl\u01d0xu\u00e9<\/rt><span class=\"rb\">\u539f\u7406<\/span><rt>yu\u00e1nl\u01d0<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5fc3\u7406\u5b66<\/span><rt>x\u012bnl\u01d0xu\u00e9<\/rt><span class=\"rb\">\u539f\u7406<\/span><rt>yu\u00e1nl\u01d0<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u501f\u52a9<\/span><rt>ji\u00e8zh\u00f9<\/rt><span class=\"rb\">\u63da\u8072\u5668<\/span><rt>y\u00e1ngsh\u0113ngq\u00ec<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u501f\u52a9<\/span><rt>ji\u00e8zh\u00f9<\/rt><span class=\"rb\">\u626c\u58f0\u5668<\/span><rt>y\u00e1ngsh\u0113ngq\u00ec<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\" data-correct=\"true\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u8072\u6ce2<\/span><rt>sh\u0113ngb\u014d<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u76f8\u6d88\u6027<\/span><rt>xi\u0101ngxi\u0101ox\u00ecng<\/rt><span class=\"rb\">\u5e72\u6d89<\/span><rt>g\u0101nsh\u00e8<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u58f0\u6ce2<\/span><rt>sh\u0113ngb\u014d<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u76f8\u6d88\u6027<\/span><rt>xi\u0101ngxi\u0101ox\u00ecng<\/rt><span class=\"rb\">\u5e72\u6d89<\/span><rt>g\u0101nsh\u00e8<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5229\u7528<\/span><rt>l\u00ecy\u00f2ng<\/rt><span class=\"rb\">\u5927\u5587\u53ed<\/span><rt>d\u00e0 l\u01ceba<\/rt><span class=\"rb\">\u64ad\u653e<\/span><rt>b\u00f2f\u00e0ng<\/rt><span class=\"rb\">\u97f3\u6a02<\/span><rt>y\u012bnyu\u00e8<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5229\u7528<\/span><rt>l\u00ecy\u00f2ng<\/rt><span class=\"rb\">\u5927\u5587\u53ed<\/span><rt>d\u00e0 l\u01ceba<\/rt><span class=\"rb\">\u64ad\u653e<\/span><rt>b\u00f2f\u00e0ng<\/rt><span class=\"rb\">\u97f3\u4e50<\/span><rt>y\u012bnyu\u00e8<\/rt><\/ruby><\/button>\n      <div class=\"quiz-explain\">Speakers are the tool, but the passage explains the actual principle as destructive interference of sound waves &mdash; two waves of the same frequency but opposite phase canceling each other out.<\/div>\n    <\/div>\n\n    <!-- Q3 -->\n    <div class=\"quiz-card\" data-index=\"2\">\n      <p class=\"quiz-q\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u300c<\/span><rt><\/rt><span class=\"rb\">\u5175\u4f86\u5c07\u64cb<\/span><rt>b\u012bng l\u00e1i ji\u00e0ng d\u01ceng<\/rt><span class=\"rb\">\uff0c<\/span><rt><\/rt><span class=\"rb\">\u6c34\u4f86\u571f\u63a9<\/span><rt>shu\u01d0 l\u00e1i t\u01d4 y\u01cen<\/rt><span class=\"rb\">\u300d<\/span><rt><\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u610f\u601d<\/span><rt>y\u00ecsi<\/rt><span class=\"rb\">\u4e3b\u8981<\/span><rt>zh\u01d4y\u00e0o<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\u6307<\/span><rt>zh\u01d0<\/rt><span class=\"rb\">\uff1a<\/span><rt><\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u201c<\/span><rt><\/rt><span class=\"rb\">\u5175\u6765\u5c06\u6321<\/span><rt>b\u012bng l\u00e1i ji\u00e0ng d\u01ceng<\/rt><span class=\"rb\">\uff0c<\/span><rt><\/rt><span class=\"rb\">\u6c34\u6765\u571f\u63a9<\/span><rt>shu\u01d0 l\u00e1i t\u01d4 y\u01cen<\/rt><span class=\"rb\">\u201d<\/span><rt><\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u610f\u601d<\/span><rt>y\u00ecsi<\/rt><span class=\"rb\">\u4e3b\u8981<\/span><rt>zh\u01d4y\u00e0o<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\u6307<\/span><rt>zh\u01d0<\/rt><span class=\"rb\">\uff1a<\/span><rt><\/rt><\/ruby><\/p>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5177\u5099<\/span><rt>j\u00f9b\u00e8i<\/rt><span class=\"rb\">\u9632\u6c34<\/span><rt>f\u00e1ngshu\u01d0<\/rt><span class=\"rb\">\u529f\u80fd<\/span><rt>g\u014dngn\u00e9ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5177\u5907<\/span><rt>j\u00f9b\u00e8i<\/rt><span class=\"rb\">\u9632\u6c34<\/span><rt>f\u00e1ngshu\u01d0<\/rt><span class=\"rb\">\u529f\u80fd<\/span><rt>g\u014dngn\u00e9ng<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u8abf\u52d5<\/span><rt>di\u00e0od\u00f2ng<\/rt><span class=\"rb\">\u8ecd\u968a<\/span><rt>j\u016bndu\u00ec<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u529b\u91cf<\/span><rt>l\u00ecliang<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u8c03\u52a8<\/span><rt>di\u00e0od\u00f2ng<\/rt><span class=\"rb\">\u519b\u961f<\/span><rt>j\u016bndu\u00ec<\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u529b\u91cf<\/span><rt>l\u00ecliang<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u76e1<\/span><rt>j\u00ecn<\/rt><span class=\"rb\">\u6240\u6709\u7684<\/span><rt>su\u01d2y\u01d2u de<\/rt><span class=\"rb\">\u529b\u91cf<\/span><rt>l\u00ecliang<\/rt><span class=\"rb\">\u505a<\/span><rt>zu\u00f2<\/rt><span class=\"rb\">\u6700\u5f8c\u7684<\/span><rt>zu\u00ech\u00f2u de<\/rt><span class=\"rb\">\u4e00\u640f<\/span><rt>y\u012b b\u00f3<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5c3d<\/span><rt>j\u00ecn<\/rt><span class=\"rb\">\u6240\u6709\u7684<\/span><rt>su\u01d2y\u01d2u de<\/rt><span class=\"rb\">\u529b\u91cf<\/span><rt>l\u00ecliang<\/rt><span class=\"rb\">\u505a<\/span><rt>zu\u00f2<\/rt><span class=\"rb\">\u6700\u540e\u7684<\/span><rt>zu\u00ech\u00f2u de<\/rt><span class=\"rb\">\u4e00\u640f<\/span><rt>y\u012b b\u00f3<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\" data-correct=\"true\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u91dd\u5c0d<\/span><rt>zh\u0113ndu\u00ec<\/rt><span class=\"rb\">\u4e0d\u540c<\/span><rt>b\u00f9t\u00f3ng<\/rt><span class=\"rb\">\u60c5\u6cc1<\/span><rt>q\u00edngku\u00e0ng<\/rt><span class=\"rb\">\u63a1\u7528<\/span><rt>c\u01ceiy\u00f2ng<\/rt><span class=\"rb\">\u9748\u6d3b\u7684<\/span><rt>l\u00ednghu\u00f3 de<\/rt><span class=\"rb\">\u5c0d\u7b56<\/span><rt>du\u00ecc\u00e8<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u9488\u5bf9<\/span><rt>zh\u0113ndu\u00ec<\/rt><span class=\"rb\">\u4e0d\u540c<\/span><rt>b\u00f9t\u00f3ng<\/rt><span class=\"rb\">\u60c5\u51b5<\/span><rt>q\u00edngku\u00e0ng<\/rt><span class=\"rb\">\u91c7\u7528<\/span><rt>c\u01ceiy\u00f2ng<\/rt><span class=\"rb\">\u7075\u6d3b\u7684<\/span><rt>l\u00ednghu\u00f3 de<\/rt><span class=\"rb\">\u5bf9\u7b56<\/span><rt>du\u00ecc\u00e8<\/rt><\/ruby><\/button>\n      <div class=\"quiz-explain\">This idiom means responding to each situation with a matching countermeasure &mdash; adapting your strategy to whatever comes, which is exactly what the headrest&#8217;s adaptive algorithm does.<\/div>\n    <\/div>\n\n    <!-- Q4 -->\n    <div class=\"quiz-card\" data-index=\"3\">\n      <p class=\"quiz-q\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u95dc\u65bc<\/span><rt>gu\u0101ny\u00fa<\/rt><span class=\"rb\">\u300c<\/span><rt><\/rt><span class=\"rb\">\u964d\u566a\u982d\u9760<\/span><rt>ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o<\/rt><span class=\"rb\">\u300d<\/span><rt><\/rt><span class=\"rb\">\uff0c<\/span><rt><\/rt><span class=\"rb\">\u4e0b\u5217<\/span><rt>xi\u00e0li\u00e8<\/rt><span class=\"rb\">\u54ea\u9805<\/span><rt>n\u01cexi\u00e0ng<\/rt><span class=\"rb\">\u6b63\u78ba<\/span><rt>zh\u00e8ngqu\u00e8<\/rt><span class=\"rb\">\uff1f<\/span><rt><\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5173\u4e8e<\/span><rt>gu\u0101ny\u00fa<\/rt><span class=\"rb\">\u201c<\/span><rt><\/rt><span class=\"rb\">\u964d\u566a\u5934\u9760<\/span><rt>ji\u00e0ngz\u00e0o t\u00f3uk\u00e0o<\/rt><span class=\"rb\">\u201d<\/span><rt><\/rt><span class=\"rb\">\uff0c<\/span><rt><\/rt><span class=\"rb\">\u4e0b\u5217<\/span><rt>xi\u00e0li\u00e8<\/rt><span class=\"rb\">\u54ea\u9879<\/span><rt>n\u01cexi\u00e0ng<\/rt><span class=\"rb\">\u6b63\u786e<\/span><rt>zh\u00e8ngqu\u00e8<\/rt><span class=\"rb\">\uff1f<\/span><rt><\/rt><\/ruby><\/p>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u53ef\u4ee5<\/span><rt>k\u011by\u01d0<\/rt><span class=\"rb\">\u62b5\u6d88<\/span><rt>d\u01d0xi\u0101o<\/rt><span class=\"rb\">\u6240\u6709<\/span><rt>su\u01d2y\u01d2u<\/rt><span class=\"rb\">\u8072\u6ce2<\/span><rt>sh\u0113ngb\u014d<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u53ef\u4ee5<\/span><rt>k\u011by\u01d0<\/rt><span class=\"rb\">\u62b5\u6d88<\/span><rt>d\u01d0xi\u0101o<\/rt><span class=\"rb\">\u6240\u6709<\/span><rt>su\u01d2y\u01d2u<\/rt><span class=\"rb\">\u58f0\u6ce2<\/span><rt>sh\u0113ngb\u014d<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u6703<\/span><rt>hu\u00ec<\/rt><span class=\"rb\">\u5728<\/span><rt>z\u00e0i<\/rt><span class=\"rb\">\u5168\u7a0b<\/span><rt>qu\u00e1nch\u00e9ng<\/rt><span class=\"rb\">\u767c\u51fa<\/span><rt>f\u0101ch\u016b<\/rt><span class=\"rb\">\u6a02\u8072<\/span><rt>yu\u00e8sh\u0113ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u4f1a<\/span><rt>hu\u00ec<\/rt><span class=\"rb\">\u5728<\/span><rt>z\u00e0i<\/rt><span class=\"rb\">\u5168\u7a0b<\/span><rt>qu\u00e1nch\u00e9ng<\/rt><span class=\"rb\">\u53d1\u51fa<\/span><rt>f\u0101ch\u016b<\/rt><span class=\"rb\">\u4e50\u58f0<\/span><rt>yu\u00e8sh\u0113ng<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u9700\u8981<\/span><rt>x\u016by\u00e0o<\/rt><span class=\"rb\">\u9644\u52a0<\/span><rt>f\u00f9ji\u0101<\/rt><span class=\"rb\">\u5438\u8072<\/span><rt>x\u012bsh\u0113ng<\/rt><span class=\"rb\">\u6750\u6599<\/span><rt>c\u00e1ili\u00e0o<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u9700\u8981<\/span><rt>x\u016by\u00e0o<\/rt><span class=\"rb\">\u9644\u52a0<\/span><rt>f\u00f9ji\u0101<\/rt><span class=\"rb\">\u5438\u58f0<\/span><rt>x\u012bsh\u0113ng<\/rt><span class=\"rb\">\u6750\u6599<\/span><rt>c\u00e1ili\u00e0o<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\" data-correct=\"true\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5167\u542b<\/span><rt>n\u00e8ih\u00e1n<\/rt><span class=\"rb\">\u81ea\u52d5<\/span><rt>z\u00ecd\u00f2ng<\/rt><span class=\"rb\">\u9069\u61c9<\/span><rt>sh\u00ecy\u00ecng<\/rt><span class=\"rb\">\u7cfb\u7d71<\/span><rt>x\u00ect\u01d2ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5185\u542b<\/span><rt>n\u00e8ih\u00e1n<\/rt><span class=\"rb\">\u81ea\u52a8<\/span><rt>z\u00ecd\u00f2ng<\/rt><span class=\"rb\">\u9002\u5e94<\/span><rt>sh\u00ecy\u00ecng<\/rt><span class=\"rb\">\u7cfb\u7edf<\/span><rt>x\u00ect\u01d2ng<\/rt><\/ruby><\/button>\n      <div class=\"quiz-explain\">The passage says its core controller has a self-adaptive algorithm; it only stays silent when there&#8217;s no noise, and only cancels the low-frequency part &mdash; not all sound waves.<\/div>\n    <\/div>\n\n    <!-- Q5 -->\n    <div class=\"quiz-card\" data-index=\"4\">\n      <p class=\"quiz-q\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u9ad8\u9435<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u964d\u4f4e<\/span><rt>ji\u00e0ngd\u012b<\/rt><span class=\"rb\">\u566a\u8072<\/span><rt>z\u00e0osh\u0113ng<\/rt><span class=\"rb\">\u4e3b\u8981<\/span><rt>zh\u01d4y\u00e0o<\/rt><span class=\"rb\">\u9760\u7684<\/span><rt>k\u00e0o de<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\u54ea\u5169\u7a2e<\/span><rt>n\u01ce li\u01ceng zh\u01d2ng<\/rt><span class=\"rb\">\u6750\u6599<\/span><rt>c\u00e1ili\u00e0o<\/rt><span class=\"rb\">\uff1f<\/span><rt><\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u9ad8\u94c1<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u964d\u4f4e<\/span><rt>ji\u00e0ngd\u012b<\/rt><span class=\"rb\">\u566a\u58f0<\/span><rt>z\u00e0osh\u0113ng<\/rt><span class=\"rb\">\u4e3b\u8981<\/span><rt>zh\u01d4y\u00e0o<\/rt><span class=\"rb\">\u9760\u7684<\/span><rt>k\u00e0o de<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\u54ea\u4e24\u79cd<\/span><rt>n\u01ce li\u01ceng zh\u01d2ng<\/rt><span class=\"rb\">\u6750\u6599<\/span><rt>c\u00e1ili\u00e0o<\/rt><span class=\"rb\">\uff1f<\/span><rt><\/rt><\/ruby><\/p>\n      <p class=\"quiz-q\" style=\"font-size: 14px; margin-top: -8px;\">&#9312; <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u63da\u8072\u5668<\/span><rt>y\u00e1ngsh\u0113ngq\u00ec<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u626c\u58f0\u5668<\/span><rt>y\u00e1ngsh\u0113ngq\u00ec<\/rt><\/ruby> &nbsp; &#9313; <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5438\u8072<\/span><rt>x\u012bsh\u0113ng<\/rt><span class=\"rb\">\u6750\u6599<\/span><rt>c\u00e1ili\u00e0o<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5438\u58f0<\/span><rt>x\u012bsh\u0113ng<\/rt><span class=\"rb\">\u6750\u6599<\/span><rt>c\u00e1ili\u00e0o<\/rt><\/ruby> &nbsp; &#9314; <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u4e2d\u7a7a<\/span><rt>zh\u014dngk\u014dng<\/rt><span class=\"rb\">\u6750\u6599<\/span><rt>c\u00e1ili\u00e0o<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u4e2d\u7a7a<\/span><rt>zh\u014dngk\u014dng<\/rt><span class=\"rb\">\u6750\u6599<\/span><rt>c\u00e1ili\u00e0o<\/rt><\/ruby> &nbsp; &#9315; <ruby class=\"lang-zh-TW\"><span class=\"rb\">\u6709\u5b54<\/span><rt>y\u01d2u k\u01d2ng<\/rt><span class=\"rb\">\u6728<\/span><rt>m\u00f9<\/rt><span class=\"rb\">\u5438\u8072\u677f<\/span><rt>x\u012bsh\u0113ngb\u01cen<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u6709\u5b54<\/span><rt>y\u01d2u k\u01d2ng<\/rt><span class=\"rb\">\u6728<\/span><rt>m\u00f9<\/rt><span class=\"rb\">\u5438\u58f0\u677f<\/span><rt>x\u012bsh\u0113ngb\u01cen<\/rt><\/ruby><\/p>\n      <button class=\"quiz-opt\" data-correct=\"true\">&#9312;&#9313;<\/button>\n      <button class=\"quiz-opt\">&#9313;&#9315;<\/button>\n      <button class=\"quiz-opt\">&#9312;&#9315;<\/button>\n      <button class=\"quiz-opt\">&#9313;&#9314;<\/button>\n      <div class=\"quiz-explain\">The headrest&#8217;s speakers (&#9312;) handle active, low-frequency cancellation, while sound-absorbing materials (&#9313;) handle passive, high-frequency reduction &mdash; the two methods named in the passage.<\/div>\n    <\/div>\n\n    <!-- Q6 -->\n    <div class=\"quiz-card\" data-index=\"5\">\n      <p class=\"quiz-q\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u4e0a\u6587<\/span><rt>sh\u00e0ngw\u00e9n<\/rt><span class=\"rb\">\u4e3b\u8981<\/span><rt>zh\u01d4y\u00e0o<\/rt><span class=\"rb\">\u8ac7\u7684<\/span><rt>t\u00e1n de<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\uff1a<\/span><rt><\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u4e0a\u6587<\/span><rt>sh\u00e0ngw\u00e9n<\/rt><span class=\"rb\">\u4e3b\u8981<\/span><rt>zh\u01d4y\u00e0o<\/rt><span class=\"rb\">\u8c08\u7684<\/span><rt>t\u00e1n de<\/rt><span class=\"rb\">\u662f<\/span><rt>sh\u00ec<\/rt><span class=\"rb\">\uff1a<\/span><rt><\/rt><\/ruby><\/p>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u9ad8\u9435<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u5e36\u4f86\u7684<\/span><rt>d\u00e0il\u00e1i de<\/rt><span class=\"rb\">\u5404\u7a2e<\/span><rt>g\u00e8zh\u01d2ng<\/rt><span class=\"rb\">\u566a\u8072<\/span><rt>z\u00e0osh\u0113ng<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u9ad8\u94c1<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u5e26\u6765\u7684<\/span><rt>d\u00e0il\u00e1i de<\/rt><span class=\"rb\">\u5404\u79cd<\/span><rt>g\u00e8zh\u01d2ng<\/rt><span class=\"rb\">\u566a\u58f0<\/span><rt>z\u00e0osh\u0113ng<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u9ad8\u9435<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u300c<\/span><rt><\/rt><span class=\"rb\">\u65e5\u884c\u842c\u91cc<\/span><rt>r\u00ec x\u00edng w\u00e0n l\u01d0<\/rt><span class=\"rb\">\u300d<\/span><rt><\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u79d8\u8a23<\/span><rt>m\u00ecju\u00e9<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u9ad8\u94c1<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u201c<\/span><rt><\/rt><span class=\"rb\">\u65e5\u884c\u4e07\u91cc<\/span><rt>r\u00ec x\u00edng w\u00e0n l\u01d0<\/rt><span class=\"rb\">\u201d<\/span><rt><\/rt><span class=\"rb\">\u7684<\/span><rt>de<\/rt><span class=\"rb\">\u79d8\u8bc0<\/span><rt>m\u00ecju\u00e9<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u70ba\u4ec0\u9ebc<\/span><rt>w\u00e8ish\u00e9nme<\/rt><span class=\"rb\">\u9ad8\u9435<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u6703<\/span><rt>hu\u00ec<\/rt><span class=\"rb\">\u6210\u70ba<\/span><rt>ch\u00e9ngw\u00e9i<\/rt><span class=\"rb\">\u51fa\u884c<\/span><rt>ch\u016bx\u00edng<\/rt><span class=\"rb\">\u9996\u9078<\/span><rt>sh\u01d2uxu\u01cen<\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u4e3a\u4ec0\u4e48<\/span><rt>w\u00e8ish\u00e9nme<\/rt><span class=\"rb\">\u9ad8\u94c1<\/span><rt>g\u0101oti\u011b<\/rt><span class=\"rb\">\u4f1a<\/span><rt>hu\u00ec<\/rt><span class=\"rb\">\u6210\u4e3a<\/span><rt>ch\u00e9ngw\u00e9i<\/rt><span class=\"rb\">\u51fa\u884c<\/span><rt>ch\u016bx\u00edng<\/rt><span class=\"rb\">\u9996\u9009<\/span><rt>sh\u01d2uxu\u01cen<\/rt><\/ruby><\/button>\n      <button class=\"quiz-opt\" data-correct=\"true\"><ruby class=\"lang-zh-TW\"><span class=\"rb\">\u5982\u4f55<\/span><rt>r\u00fah\u00e9<\/rt><span class=\"rb\">\u8b93<\/span><rt>r\u00e0ng<\/rt><span class=\"rb\">\u9ad8\u9435\u7684<\/span><rt>g\u0101oti\u011b de<\/rt><span class=\"rb\">\u566a\u8072<\/span><rt>z\u00e0osh\u0113ng<\/rt><span class=\"rb\">\u300c<\/span><rt><\/rt><span class=\"rb\">\u6d88\u5931<\/span><rt>xi\u0101osh\u012b<\/rt><span class=\"rb\">\u300d<\/span><rt><\/rt><\/ruby><ruby class=\"lang-zh-CN\"><span class=\"rb\">\u5982\u4f55<\/span><rt>r\u00fah\u00e9<\/rt><span class=\"rb\">\u8ba9<\/span><rt>r\u00e0ng<\/rt><span class=\"rb\">\u9ad8\u94c1\u7684<\/span><rt>g\u0101oti\u011b de<\/rt><span class=\"rb\">\u566a\u58f0<\/span><rt>z\u00e0osh\u0113ng<\/rt><span class=\"rb\">\u201c<\/span><rt><\/rt><span class=\"rb\">\u6d88\u5931<\/span><rt>xi\u0101osh\u012b<\/rt><span class=\"rb\">\u201d<\/span><rt><\/rt><\/ruby><\/button>\n      <div class=\"quiz-explain\">The article is mainly about the noise-canceling headrest technology &mdash; how it works and how it makes train noise &#8220;disappear&#8221; for passengers.<\/div>\n    <\/div>\n\n    <div class=\"quiz-nav\">\n      <button class=\"quiz-prev\" disabled>&larr; Prev<\/button>\n      <button class=\"quiz-next\">Next &rarr;<\/button>\n    <\/div>\n  <\/div>\n\n  <div class=\"coffee-wrap\">\n    <p class=\"coffee-title\">Did this lesson help you? \ud83d\ude42<\/p>\n    <p class=\"coffee-sub\">If you enjoyed practicing with this page, consider buying me a coffee &mdash; it helps keep new lessons like this one coming.<\/p>\n    <a class=\"coffee-btn\" href=\"https:\/\/ko-fi.com\/tiffanystalk\" target=\"_blank\" rel=\"noreferrer noopener\">\u2615 Buy me a coffee<\/a>\n  <\/div>\n\n<\/div>\n\n<script>\n(function () {\n  var root = document.getElementById('hsk79-rail');\n  if (!root) return;\n\n  \/\/ ---- quiz shells ----\n  var shells = Array.prototype.slice.call(root.querySelectorAll('.quiz-shell'));\n  shells.forEach(function (shell) {\n    var cards = Array.prototype.slice.call(shell.querySelectorAll('.quiz-card'));\n    var prevBtn = shell.querySelector('.quiz-prev');\n    var nextBtn = shell.querySelector('.quiz-next');\n    var progress = shell.querySelector('.quiz-progress');\n    var current = 0;\n\n    function showCard(i) {\n      cards.forEach(function (c, idx) {\n        if (idx === i) { c.classList.add('active'); 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}\n    if (stackPrev) { stackPrev.addEventListener('click', goPrev); }\n\n    renderStack();\n  }\n})();\n<\/script>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-medium is-resized\"><a href=\"https:\/\/tiffanysmandarin.com\/index.php\/reading\/\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"86\" src=\"https:\/\/tiffanysmandarin.com\/wp-content\/uploads\/2022\/06\/e68f92e59c963-300x86.png\" alt=\"\" class=\"wp-image-571\" style=\"width:150px;height:43px\" srcset=\"https:\/\/tiffanysmandarin.com\/wp-content\/uploads\/2022\/06\/e68f92e59c963-300x86.png 300w, https:\/\/tiffanysmandarin.com\/wp-content\/uploads\/2022\/06\/e68f92e59c963-600x171.png 600w, https:\/\/tiffanysmandarin.com\/wp-content\/uploads\/2022\/06\/e68f92e59c963.png 700w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>HSK 7&ndash;9 &middot; Reading Practice Noise-Canceling Headrests on China&#8217;s High-Speed Trains Vocabulary HSK 7&ndash;9 \u5fc5\u4e0d\u53ef\u5c11b\u00ecb\u00f9k\u011bsh\u01ceo\u5fc5\u4e0d\u53ef\u5c11b\u00ecb\u00f9k\u011bsh\u01ceo Tap to flip indispensable, essential \u6c34shu\u01d0\u662fsh\u00ec\u751f\u6d3bsh\u0113nghu\u00f3\u4e2dzh\u014dng\u5fc5\u4e0d\u53ef\u5c11b\u00ecb\u00f9k\u011bsh\u01ceo\u7684de\u8cc7\u6e90z\u012byu\u00e1n\u6c34shu\u01d0\u662fsh\u00ec\u751f\u6d3bsh\u0113nghu\u00f3\u4e2dzh\u014dng\u5fc5\u4e0d\u53ef\u5c11b\u00ecb\u00f9k\u011bsh\u01ceo\u7684de\u8d44\u6e90z\u012byu\u00e1n Water is an indispensable resource in daily life. HSK 7&ndash;9 \u5e72\u64feg\u0101nr\u01ceo\u5e72\u6270g\u0101nr\u01ceo Tap to flip interference, to disturb \u624b\u6a5fsh\u01d2uj\u012b\u4fe1\u865fx\u00ecnh\u00e0o\u6709\u6642y\u01d2ush\u00ed\u6703hu\u00ec\u53d7\u5230sh\u00f2ud\u00e0o\u5929\u6c23ti\u0101nq\u00ec\u7684de\u5e72\u64feg\u0101nr\u01ceo\u624b\u673ash\u01d2uj\u012b\u4fe1\u53f7x\u00ecnh\u00e0o\u6709\u65f6y\u01d2ush\u00ed\u4f1ahu\u00ec\u53d7\u5230sh\u00f2ud\u00e0o\u5929\u6c14ti\u0101nq\u00ec\u7684de\u5e72\u6270g\u0101nr\u01ceo Cell phone signals are sometimes disturbed by the weather. HSK 7&ndash;9 \u62b5\u6d88d\u01d0xi\u0101o\u62b5\u6d88d\u01d0xi\u0101o Tap to flip to&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_wp_convertkit_post_meta":{"form":"-1","landing_page":"0","tag":"0","restrict_content":"0"},"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":true,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[56],"tags":[],"class_list":["post-17244","post","type-post","status-publish","format-standard","hentry","category-hsk7"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Noise-Canceling Headrests on China&#039;s High-Speed Trains - OneDotDot Chinese<\/title>\n<meta name=\"description\" content=\"Offer HSK7-9 Mandarin Chinese reading materials, encompassing simplified and traditional characters, Pinyin, English translations, and comprehension questions, all available for free practice.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tiffanysmandarin.com\/index.php\/2026\/09\/21\/chinas-high-speed-trains\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Noise-Canceling Headrests on China&#039;s High-Speed Trains - 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