跟读练习: Should we be looking for life elsewhere in the universe? - Aomawa Shields - 通过YouTube学习英语口语
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Astronomers have discovered thousands of planets orbiting stars other than the Sun.
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Astronomers have discovered thousands of planets orbiting stars other than the Sun.
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They come in all sizes, at different orbital distances from their stars.
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The closest of them are trillions of miles away, and even the largest are just fuzzy patches in the fields of high-powered telescopes.
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But if one of these planets is close in size to the Earth
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and orbits not too close and not too far away from its parent star, it could be rocky and warm enough to have oceans and perhaps life.
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Astronomers discover these potentially habitable planets, and their eyes get big and wide.
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Could one of these distant worlds carry the building blocks of life?
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Or even a living, breathing civilization?
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Is the question, are we alone in the universe, about to be answered?
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But wait, maybe we should ask a different question first.
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Should we try to find out if we're alone in the universe?
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If we do find the atmospheric fingerprints of life on one of these small, distant worlds, should we try to contact any beings who may live there?
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Is that wise?
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Three decades ago, NASA decided the answer was yes.
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Voyager 1 and 2 were launched in 1977 to explore the giant planets in the solar system.
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Each spacecraft carried a golden phonograph record—a time capsule of sorts—that included included clues
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and messages meant to convey the story of human civilization.
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The contents of these gold-plated copper disks were chosen by a committee chaired by American astronomer and author Carl Sagan.
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They included over 100 images and a range of sounds from the natural world, ocean waves, thunder, the sounds of birds and whales.
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The records also included music from many different time periods and cultures,
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greetings in 55 languages, and messages from the President of the United States and the UN Secretary General.
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They also included a map.
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Each golden record displays the location of our solar system with respect to 14 pulsars.
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Their precise, unique frequencies were indicated, so that intelligent extraterrestrial life forms could use them to find the Earth.
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Many years later, renowned physicist Stephen Hawking said
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that it was a mistake to give an alien species a roadmap to our planet.
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Hawking suspected that any extraterrestrial life probably wasn't any more complex than microbes,
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But he warned that if an advanced alien species did visit Earth, it could be as catastrophic as Christopher Columbus's arrival was for the Native Americans.
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Meanwhile, the golden records continue their journeys.
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In 1990, both Voyager spacecraft passed beyond the orbit of Pluto.
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Voyager 1 entered interstellar space in 2012 and will reach the nearest stellar system in 40,000 years.
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If either spacecraft is discovered by extraterrestrial life, there's a possibility that they could decipher the clues from the Golden Record and one day reach our planet.
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That's particularly true if theirs is a much more technologically advanced civilization.
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That life could be benevolent, as we would hope to be if humans are one day able to achieve interstellar travel.
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Or it could be hostile.
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Searching for planets that might have life means staring into a great abyss.
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We'll likely have no clear knowledge of the evolutionary stage, sentience, character, or intentions of the first form of life we discover.
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So it's a risk to turn our eyes outwards.
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we risk our very way of life.
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But it may be a greater risk not to look, to deny the very pioneering spirits that help shape our own species.
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We are all born curious about the world and the universe.
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Pursuing that curiosity is one of humankind's greatest achievements.
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Perhaps there is room to push the frontiers of science, provided that we cradle, alongside our fervor,
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another of humankind's greatest assets, hope you
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关于本课
在本课中，学习者将通过观看视频《我们是否应该在宇宙中寻找生命？》来练习英语口语。视频由著名天文学家Aomawa Shields讲述，探讨了寻找外星生命的可能性，以及人类如何在宇宙中进行探索。通过此学习，你将改善你的英语发音和语调，了解科学相关词汇，并提升你的英语口语技巧。利用这个机会来扩展你的词汇量，并培养对复杂话题的表达能力。
关键词汇与短语
- 可能适居的行星 (potentially habitable planets)
- 大气指纹 (atmospheric fingerprints)
- 外星生命 (extraterrestrial life)
- 宇宙探索 (exploration of the universe)
- 时间胶囊 (time capsule)
- 技术先进的文明 (technologically advanced civilization)
- 科学前沿 (frontiers of science)
- 人类的好奇心 (curiosity of humankind)
练习技巧
在进行口语练习时，建议你采用 shadowing 技巧，即在视频播放的同时模仿发音与语调。针对本视频的语速，尽量保持与讲者的节奏一致。注意，Aomawa Shields的语音清晰而富有感情，因此要特别关注她的语调变化。这有助于你 提高英语发音 的准确性和自信心。通常情况下，在第二次观看时，可以尝试暂停视频，重复她说的每一句话，然后直接跟随。这不仅能提高你的口语能力，还能帮助你更好地理解复杂的科学话题。在这个过程中，利用 shadow speaks 这样的表达，可帮助你集中注意力，增强语音记忆。
为达到最佳效果，每次练习后，给自己一些反馈。例如，比对你自己的发音与视频中的内容，寻找需要改进的地方，逐步提高自己的英语口语水平。可以多次回顾这些关键词汇与短语，结合其他课程的内容来加深记忆，形成良好的学习习惯。选择一个合适的 shadowing site，更好组织你的学习资源，并保持每天的练习，必能如鱼得水，让你的口语能力有质的飞跃。
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。