ฝึกพูดภาษาอังกฤษด้วยเทคนิค Shadowing จากวิดีโอ: 3M™ Clean-Trace™ ATP Monitoring System Environmental Surfaces Sampling

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1
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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Vocabulary and speaking notes for this lesson

This C1 speaking lesson is built on the video “3M™ Clean-Trace™ ATP Monitoring System Environmental Surfaces Sampling”. The speaker keeps coming back to these words: surface, test, swab, sample, cleantrace. This video has 25 sentences and 364 words to shadow. The speech runs for 2:34. The speaker talks at a steady 142 words per minute, a comfortable pace for shadowing. Only 77% of the words are among the 3,000 most common in English, so the vocabulary is demanding.

Key vocabulary in this video

The 15 most advanced words in the video, with pronunciation and meaning:

WordPronunciationMeaning
swab noun/swɒb/A small piece of soft, absorbent material, such as gauze, used to clean wounds, apply medicine, or take samples of body fluids. Often attached to a stick or…
activate verb/ˈæktɪˌveɪt/To encourage development or induce increased activity; to stimulate.
luminometer nounphotometer
centimeter noun(Canadian spelling, alternative) Alternative form of centimetre.
rotate verb/ˈɹoʊ.teɪt/To spin, turn, or revolve.
designate verb/ˈdɛz.ɪɡ.neɪt/To mark out and make known; to point out; to indicate; to show; to distinguish by marks or description
forefinger noun/ˈfɔɹˌfɪŋ.ɡɚ/The index finger: the first finger next to the thumb.
walkthrough noun/ˈwɔːk.θɹuː/A tour of a space, such as a property for sale or rent.
zigzag noun/ˈzɪɡ.zæɡ/A line or path that proceeds by sharp turns in alternating directions.
efficacy noun/ˈɛf.ɪ.kə.si/The ability to produce a desired effect under ideal testing conditions.
overlap verb/ˌəʊvəˈlæp/To extend over and partly cover something.
quantitative adjective/ˈkwɑn.təˌteɪ.tɪv/Of a measurements and data types: based on some quantity or number rather than on some quality.
flex verb/flɛks/To bend something.
prompt verb/pɹɑmpt/To lead (someone) toward what they should say or do.
sleeve noun/sliv/The part of a garment that covers the arm.

Pronunciation to watch

  • The “th” sounds: walkthrough /ˈwɔːk.θɹuː/, thumb /ˈθʌm/, threshold /ˈθɹɛʃ(h)oʊld/
  • The “sh” and “zh” sounds: threshold /ˈθɹɛʃ(h)oʊld/, measurement /ˈmɛʒ.ə.mənt/
  • Long words — get the stress right: efficacy /ˈɛf.ɪ.kə.si/, quantitative /ˈkwɑn.təˌteɪ.tɪv/

How to practise with this video

  1. Listen to the whole video once without speaking and note the words you do not know.
  2. Shadow it sentence by sentence at normal speed, repeating each one until your rhythm matches the speaker.
  3. Record yourself and compare with the original, paying attention to words like swab, activate, luminometer.

เทคนิค Shadowing คืออะไร?

Shadowing เป็นเทคนิคการเรียนรู้ภาษาที่ได้รับการรับรองทางวิทยาศาสตร์ พัฒนาขึ้นสำหรับการฝึกนักแปลมืออาชีพ วิธีการนี้เรียบง่ายแต่ทรงพลัง: คุณฟังเสียงภาษาอังกฤษจากเจ้าของภาษาและพูดตามทันที — เหมือนเงาที่ตามผู้พูดด้วยช่วงเวลาห่าง 1-2 วินาที การวิจัยแสดงว่าเทคนิคนี้ปรับปรุงความแม่นยำในการออกเสียง ทำนองเสียง จังหวะ การเชื่อมเสียง การฟังเข้าใจ และความคล่องแคล่วในการพูดได้อย่างมีนัยสำคัญ

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