跟读练习: [Song ngữ - TED Ed] Sóng thần hình thành như thế nào? - 通过视频学习英语口语
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In 479 BC, when Persian soldiers besieged the Greek city of Potidaea, The tide retreated much farther than usual,
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leaving a convenient invasion route.
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But this wasn't a stroke of luck.
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Before they had crossed halfway, the water returned in a wave higher than anyone had ever seen, drowning the attackers.
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The Potidaeans believed they had been saved by the wrath of Poseidon.
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But what really saved them was likely the same phenomenon that has destroyed countless others: a tsunami.
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Although tsunamis are commonly known as tidal waves, they're actually unrelated to the tidal activity caused by the gravitational forces of the Sun and Moon.
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In many ways, tsunamis are just larger versions of regular waves.
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They have a trough and a crest, and consist not of moving water, but the movement of energy through water.
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The difference is in where this energy comes from.
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For normal ocean waves, it comes from wind.
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Because this only affects the surface, the waves are limited in size and speed.
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But tsunamis are caused by energy originating underwater, from a volcanic eruption, a submarine landslide, or most commonly, an earthquake on the ocean floor,
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caused when the tectonic plates of the Earth's surface slip, releasing a massive amount of energy into the water.
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This energy travels up to the surface, displacing water and raising it above the normal sea level.
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but gravity pulls it back down, which makes the energy ripple outwards horizontally.
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Thus, the tsunami is born, moving at over 500 miles per hour.
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When it's far from shore, a tsunami can be barely detectable, since it moves through the entire depth of the water.
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But when it reaches shallow water, something called wave shoaling occurs.
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Because there is less water to move through, this still massive amount of energy is compressed.
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The wave's speed slows down while its height rises to as much as 100 feet.
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The word tsunami, Japanese for harbor wave, comes from the fact that it only seems to appear near the coast.
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If the trough of a tsunami reaches shore first, the water will withdraw farther than normal before the wave hits, which can be misleadingly dangerous.
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A tsunami will not only drown people near the coast, but level buildings and trees for a mile inland or more, especially in low -lying areas.
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As if that weren't enough, the water then retreats, dragging with it the newly created debris, and anything, or anyone, unfortunate enough to be caught in its path.
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The 2004 Indian Ocean tsunami was one of the deadliest natural disasters in history, killing over 200 ,000 people throughout South Asia.
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So how can we protect ourselves against this destructive force of nature?
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People in some areas have attempted to stop tsunamis with sea walls, floodgates, and channels to divert the water.
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But these are not always effective.
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In 2011, a tsunami surpassed the flood wall protecting Japan's Fukushima power plant.
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causing a nuclear disaster in addition to claiming over 18 ,000 lives.
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Many scientists and policy makers are instead focusing on early detection, monitoring underwater pressure and seismic activity,
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and establishing global communication networks for quickly distributing alerts.
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When nature is too powerful to stop, the safest course is to get out of its way.
本课简介
在本课中，您将通过观看关于海啸形成的TED演讲视频，学习如何用英语讨论自然现象。此视频适合各种英语水平的学习者，通过分析其内容，您将练习听力、发音和流利度。通过有效的shadow speak练习，您将能够更好地理解和应用相关的词汇和短语，从而提升您的口语能力。
关键词汇与短语
- 海啸 (tsunami) - 指由 underwater 能量引起的大型海浪。
- 潮汐波 (tidal wave) - 常被用来描述海啸，但实际上与潮汐活动无关。
- 地下滑坡 (submarine landslide) - 造成海啸的另一个可能因素。
- 震源 (epicenter) - 地震发生的地点，是海啸形成的主要原因之一。
- 警报 (alert) - 应对海啸的预警系统的重要组成部分。
- 波高 (wave height) - 海啸和普通海浪的显著区别之一。
- 水压 (water pressure) - 潜水监测海啸的关键因素。
- 能量传播 (energy propagation) - 海啸波的形成机制。
练习技巧
在练习时，您可以通过反复跟读来提高自己的发音和语调。与视频中的演讲者同步进行shadowing，将帮助您适应英语的节奏和语调。在这段视频中，演讲者的语速适中，表达清晰，非常适合英语学习者进行shadow speak练习。同时，可以利用暂停功能，逐句重复，确保每个单词的发音准确。此外，结合文字稿，您可以在看YouTube学英语的过程中更有效地吸收听到的内容，并增强口语表达能力。记得在练习过程中保持放松，多尝试不同的语调和语气，以便更好地掌握自然语言的流畅性。
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。