跟读练习: How to Make Your Own Solar Water Heater - 通过YouTube学习英语口语
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This is the VOA Special English Technology Report.
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This is the VOA Special English Technology Report.
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Solar water heaters are used around the world and are not very difficult to build.
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The system we are going to describe is based on a design developed some years ago in Afghanistan.
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Since then, it has been built and used in many countries.
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It can heat 70 liters of water to 60 degrees Celsius.
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It can do this between sunrise and noon on a clear day with an average air temperature of 32 degrees Celsius.
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There are two parts to the solar water heater.
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One part is made of a sheet of metal painted black.
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surfaces become hotter in the sun than surfaces painted any other color.
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This black metal plate is called a collector.
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The collector is placed in contact with the water.
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There are several kinds of metal sheets that can be used for the collector.
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Corrugated metal will work very well.
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Corrugated sheets are often used as roofs on housing.
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Once the water is heated,
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it is kept hot with insulation material.
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This allows the water to stay warm for a long time.
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The second part of the solar water heater holds the water for the system.
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This storage tank can be a container that holds about 100 liters.
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Two rubber pipes are attached to the water storage tank.
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One pipe lets water flow into the system.
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The other lets water flow out.
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When the water heater is working correctly,
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water will flow from the storage tank to the collector and back again.
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You can use the hot water at the top of the tank for washing and cleaning.
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You can change the flow of water so that the temperature is hot or warm as desired.
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This solar water heater is easy to build and operate.
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It will last about two years before the rubber pipes need to be replaced.
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There is also something else you will need to make the solar water heater work, the sun.
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As you might expect, the heater will heat water only on sunny days.
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You can get more information about solar water heaters and other projects from Enterprise Works VITA.
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This group works internationally to fight poverty.
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The website is EnterpriseWorks.org.
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Choose the link for news and resources, then click on Publications.
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For VOA Special English, I'm Alex Villarreal.
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To read and listen to more stories about technology and for English teaching activities, go to voaspecialenglish.com.
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We're on Facebook, Twitter, and iTunes at VOA Learning English.
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关于本课
在本次课程中，学习者将探索如何创建太阳能热水器的基本原理。这一内容不仅有助于您理解技术说明的英语表达，还将为您提供实用的术语和短语，以丰盈您的英语词汇。通过与视频的对话练习，您将能够提高英语发音，增强流利度，尤其是在科技领域的雅思口语练习中表现得更加自信。
关键词汇与短语
- 太阳能热水器 - Solar water heater
- 金属板 - Metal plate
- 集热器 - Collector
- 绝缘材料 - Insulation material
- 水储存箱 - Storage tank
- 水管 - Rubber pipes
- 流动 - Flow
- 加热 - Heat
练习提示
在观看视频时，您可以使用英语影子跟读（shadow speech）的方法进行模仿练习。建议您将视频的播放速度调整到适合自己的节奏，从而能够更好地跟上讲解者的语速。可以从较慢的速度开始，熟悉单词和句子的发音，然后逐渐加快，以提升您的流利度和自然度。
在练习时，注意模仿讲解者的语调和重音，这对提高英语发音至关重要。您可以反复聆听关键短语，如“太阳能热水器”和“集热器”，并在说出这些词时集中注意力，以确保能够自信地在雅思口语练习中使用。每当您重复这些短语时，尝试加入自己的解释或描述，这样不仅能锻炼口语能力，还能增强您的语言表达能力。
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。