跟读练习: Epley Maneuver to Treat BPPV Vertigo - 通过视频学习英语口语
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22 句
如果句子过短或过长，请点击 Edit 进行调整。
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Normally, only with head movement does fluid within the inner ear also move, informing the brain that a head turn occurred.
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However, should a crystal called an otolith gets displaced into the posterior canal of the inner ear, BPPV dizziness occurs.
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Fluid movement occurs due to the crystal rather than head turns
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causing the brain to think movement has occurred even though none has happened.
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The Epley maneuver is performed to treat this posterior canal BPPV by trying to get the loose crystal out of the canal.
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This maneuver is started by turning the head 45 degrees
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and the body laid back such that the head is extended about 20 to 30 degrees.
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If BPPV is present, eye twitching called nystagmus will occur.
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After 30 to 60 seconds, the head is turned 90 degrees to the opposite side and held for another 30 to 60 seconds.
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The head is then further rotated another 90 degrees, accomplished by having the patient turn onto their side,
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which is then held for another 30 to 60 seconds.
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At this point, the head should be turned 45 degrees from the horizontal.
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When performing this maneuver, another individual can help with these position changes.
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The maneuver is then completed by having the patient sit up.
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So what's going on with these position changes?
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Essentially, the head is moved in such a way to manipulate the crystal to fall towards the canal opening.
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With each position change, it takes about 30 to 60 seconds for the crystal to settle into the most dependent position in the canal.
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If turns are made before the crystal has a chance to settle, the crystal may fall back the wrong way and the maneuver will fail.
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It's also important that the head positions are angled correctly
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or else the crystal will not settle to the correct position in the canal and the maneuver will fail.
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Also, if the position changes are done too slowly, the crystal may not settle quickly enough from lack of momentum and the maneuver will also fail.
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Once the crystal falls out of the canal, the dizziness should resolve if due to posterior canal BPPV.
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本课的词汇与口语要点
这节口语课以视频“Epley Maneuver to Treat BPPV Vertigo”为素材。 视频中反复出现的词有：crystal, canal, maneuver, position, degrees。 这段视频共有 9 个句子、348 个单词可供跟读。 讲话部分时长为 2:03。 说话人语速自然，每分钟约 170 个词，接近日常对话。 只有 81% 的单词属于英语最常用的 3,000 词，词汇难度较高。
视频中的重点词汇
视频中 15 个值得学习的单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| crystal 名词 | /ˈkɹɪstəl/ | 結晶 /结晶 |
| canal 名词 | /kəˈnæl/ | 運河 /运河 |
| maneuver 名词 | /məˈnuvɚ/ | 機動 /机动, 演習 /演习 |
| occur 动词 | /əˈkɜː/ | 發生 /发生 |
| fluid 名词 | /ˈflu.ɪd/ | 流體 /流体, 液體 /液体 |
| angle 名词 | /ˈæŋ.ɡəl/ | 角, 角度 |
| dependent 形容词 | /dɪˈpɛndənt/ | 依靠, 倚賴 /倚赖 |
| resolve 动词 | /ɹɪˈzɑlv/ | 解決 /解决 |
| inform 动词 | /ɪnˈfɔɹm/ | 通知, 告知 |
| momentum 名词 | /ˌmə(ʊ)ˈmɛntəm/ | 動量 /动量 |
| accomplish 动词 | /əˈkɑm.plɪʃ/ | 達到 /达到 |
| horizontal 形容词 | /ˌhoɹəˈzɑn.təl/ | 水平, 橫的 /横的 |
| twitch 名词 | /twɪt͡ʃ/ | 抽搐 |
| manipulate 动词 | /məˈnɪp.jʊ.leɪt/ | 操纵 |
| rotate 动词 | /ˈɹoʊ.teɪt/ | 旋转, 转动 |
需要注意的发音
- 长单词——注意重音位置: momentum /ˌmə(ʊ)ˈmɛntəm/, horizontal /ˌhoɹəˈzɑn.təl/, manipulate /məˈnɪp.jʊ.leɪt/, posterior /poʊˈstɪɹ.i.ɚ/
中文母语者容易读错的音：
- /v/ — 不要读成 /w/，上齿轻触下唇: maneuver /məˈnuvɚ/, resolve /ɹɪˈzɑlv/
- 词尾辅音 — 要读清楚，后面不要加元音: fluid /ˈflu.ɪd/, extend /ɛkˈstɛnd/, dependent /dɪˈpɛndənt/, resolve /ɹɪˈzɑlv/, accomplish /əˈkɑm.plɪʃ/
- /r/ 和 /l/ 的区别: crystal /ˈkɹɪstəl/, correctly /kəˈɹɛk(t).li/, resolve /ɹɪˈzɑlv/, horizontal /ˌhoɹəˈzɑn.təl/
如何用这段视频练习
- 先完整听一遍视频，不要开口，记下不认识的单词。
- 先用 0.75 倍速逐句跟读，熟练之后再回到正常速度。
- 录下自己的声音并与原声对比，特别注意 crystal, canal, maneuver 这类单词。
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。