跟读练习: A ‘Dead Zone’ Spreads in the Gulf of Mexico Each Y - 通过YouTube学习英语口语
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Music From VOA Learning English,
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this is the Agriculture Report.
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An area known as a dead zone develops every spring in the Gulf of Mexico near the mouth of the Mississippi River.
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It can spread as much as 13,600 square kilometers,
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extending all the way to the eastern Texas coast.
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Scientists know what causes the dead zone.
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Too much nitrogen.
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But the solution might be hard to accept.
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Bayani Cardenas is a professor of water studies at the University of Texas at Austin.
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He said the movement of rivers usually removes substances like nitrates.
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So he wondered why that natural filtration process does not remove nitrates from the Mississippi River.
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Professor Cardenas said his recent study shows that more than 99% of the river's water does pass through the river's sediment,
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which is on the shore or bottom of the river.
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But he said the study found that there is
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so much nitrogen in the river system that it simply cannot filter all of it.
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Nitrogen in the water supports the growth of algae.
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As the algae dies, it sinks to the bottom of the river,
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where it breaks down or decomposes.
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It then takes oxygen from the water.
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This condition is called hypoxia,
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and it is deadly to fish and shrimp.
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Where does all this nitrogen come from?
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The answer is farms.
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Farmers use nitrogen fertilizer and other chemicals to grow their crops,
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and that nitrogen washes from the fields into streams and rivers.
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Storms in the next few months will mix the Gulf water,
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and the dead zone will disappear,
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but it will return next year.
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Scientists say it will grow larger in years to come if something is not done
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to reduce the amount of nitrogen in the Mississippi River.
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For VOA Learning English, I'm Carolyn Pursuti.
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背景与上下文
在这段视频中，来自美国之音的农业报告探讨了墨西哥湾中一个季节性现象——“死区”的形成。这个现象通常在每年春季出现在密西西比河口，因过多的氮而导致水中的氧气减少，严重影响水中生物的生存。教授巴亚尼·卡德纳斯分析了这一现象的成因，指出农业活动中的氮化肥是导致死区扩大的主要原因。这为希望提高英语口语练习的学习者提供了丰富的内容，不仅能够帮助他们增强语言能力，还能够增强他们对环境问题的理解。
日常交流中的五大短语
- 死区 (Dead Zone)
- 氮 (Nitrogen)
- 水下氧气不足 (Hypoxia)
- 农场 (Farms)
- 河流沉积物 (River Sediment)
这些短语不仅在上述上下文中频繁出现，也适用于与朋友或同事讨论环境问题。熟练掌握这些短语将帮助你在与他人交流有关农业与水质问题时更自信。
逐步影子跟读指南
要有效地使用视频中的内容进行英语影子跟读，你可以按照以下步骤进行：
- 首先，观看视频一遍，注意讲者的语调和情感。理解内容的整体意义。
- 接下来，暂停视频，逐句重复讲话者的内容。使用英语影子跟读的方法，尽量模仿发音和语调，以此来提高你的英语发音。
- 对于较为复杂的句子，可以慢慢分解，同时利用雅思口语练习中常见的回答结构来帮助理解。
- 反复练习每个片段，直到你能够流畅地复述视频中的内容.
- 最后，尝试用自己的话总结视频的主要内容，进一步巩固你的口语能力。
通过这些步骤，你不仅能够提高你的口语能力，还能深入理解死区及其对生态的影响，从而在日常交流中进行更深入的讨论。
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。