跟读练习: 3M™ Clean-Trace™ ATP Monitoring System Environmental Surfaces Sampling - 通过视频学习英语口语
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25 句
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Hello and welcome to the 3M Lab.
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In this video, you will learn how to collect a sample from a high-touch
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surface to measure cleaning efficacy using the 3M CleanTrace ATP monitoring system.
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You will need a 3M CleanTrace ATP Surface Test UXC and the 3M CleanTrace Luminometer LX25.
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Before you begin, make sure your surface is dry.
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When you are ready to collect your sample, remove the Surface Test UXC from the device sleeve, taking care to touch only the blue handle.
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Do not let the swab touch any surface except that which is to be sampled.
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Hold the test between thumb and forefinger so you can easily rotate the swab.
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Touch the swab to the surface you are testing and apply enough pressure to cause the wand to flex.
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Move your swab in an overlapping zigzag pattern
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that covers a 10 centimeter by 10 centimeter or a 4 inch by 4 inch square area.
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During sample collection, rotate the swab to ensure sufficient contact between the swab and the surface being sampled.
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Continue this process until your full sample is collected.
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You can activate and measure this test immediately, or you can wait until you have collected multiple surface samples.
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You have up to four hours to activate surface tests.
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When you are ready to activate and measure your ATP tests, press the handle down until you feel a click.
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Grip the top of the test and shake side to side for at least five seconds.
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Insert the test into the CleanTrace Luminometer LX25 and follow the on-screen prompts to take a measurement.
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In 10 seconds or less, you'll see the result, a quantitative RLU value and a pass or fail response.
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If the RLU value is above 250 or above the facility designated threshold,
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the surface should be re-cleaned and re-tested according to your facility's policies and procedures.
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You'll follow the same click and shake steps to activate any additional ATP tests
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and the same steps to measure your results using the luminometer.
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And always refer to the product manuals or the product's instructions for use.
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For a system overview and detailed walkthroughs of additional sample collection procedures, visit 3M.com slash cleantrace.
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本课的词汇与口语要点
这节 C1 级别的口语课以视频“3M™ Clean-Trace™ ATP Monitoring System Environmental Surfaces Sampling”为素材。 视频中反复出现的词有：surface, test, swab, sample, cleantrace。 这段视频共有 25 个句子、364 个单词可供跟读。 讲话部分时长为 2:34。 说话人语速平稳，每分钟约 142 个词，很适合跟读。 只有 77% 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
视频中最难的 14 个单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| activate 动词 | /ˈæktɪˌveɪt/ | 激活 |
| rotate 动词 | /ˈɹoʊ.teɪt/ | 旋转, 转动 |
| designate 动词 | /ˈdɛz.ɪɡ.neɪt/ | 指定, 劃定 /划定 |
| forefinger 名词 | /ˈfɔɹˌfɪŋ.ɡɚ/ | 食指, 二拇指 |
| walkthrough 名词 | /ˈwɔːk.θɹuː/ | 攻略 |
| zigzag 名词 | /ˈzɪɡ.zæɡ/ | 之字形, Z字形 |
| efficacy 名词 | /ˈɛf.ɪ.kə.si/ | 功效, 效力 |
| overlap 动词 | /ˌəʊvəˈlæp/ | 重叠 |
| quantitative 形容词 | /ˈkwɑn.təˌteɪ.tɪv/ | 量的, 數量的 /数量的 |
| sleeve 名词 | /sliv/ | 袖子, 袖筒 |
| thumb 名词 | /ˈθʌm/ | 大拇指, 拇指 |
| insert 动词 | /ɪnˈsɝt/ | 插入, 插上 |
| threshold 名词 | /ˈθɹɛʃ(h)oʊld/ | 門檻 /门槛, 門限 /门限 |
| measurement 名词 | /ˈmɛʒ.ə.mənt/ | 尺寸 |
需要注意的发音
- “th” 音: walkthrough /ˈwɔːk.θɹuː/, thumb /ˈθʌm/, threshold /ˈθɹɛʃ(h)oʊld/
- “sh” 和 “zh” 音: threshold /ˈθɹɛʃ(h)oʊld/, measurement /ˈmɛʒ.ə.mənt/
- 长单词——注意重音位置: efficacy /ˈɛf.ɪ.kə.si/, quantitative /ˈkwɑn.təˌteɪ.tɪv/
中文母语者容易读错的音：
- /v/ — 不要读成 /w/，上齿轻触下唇: activate /ˈæktɪˌveɪt/, overlap /ˌəʊvəˈlæp/, quantitative /ˈkwɑn.təˌteɪ.tɪv/, sleeve /sliv/
- 词尾辅音 — 要读清楚，后面不要加元音: swab /swɒb/, activate /ˈæktɪˌveɪt/, rotate /ˈɹoʊ.teɪt/, designate /ˈdɛz.ɪɡ.neɪt/, zigzag /ˈzɪɡ.zæɡ/
- /æ/ — 嘴张大，不要读成 /e/: activate /ˈæktɪˌveɪt/, zigzag /ˈzɪɡ.zæɡ/, overlap /ˌəʊvəˈlæp/
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。
- 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
- 录下自己的声音并与原声对比，特别注意 activate, rotate, designate 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。