跟读练习: Why are there so many insects? - Murry Gans - 通过YouTube学习英语口语
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If insects suddenly morphed into large beings, and decided to wage war on us, there's no doubt that humans would lose.
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If insects suddenly morphed into large beings, and decided to wage war on us, there's no doubt that humans would lose.
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We'd simply be crushed by their sheer numbers.
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There are an estimated 10 quintillion individual insects on Earth.
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That's a one followed by 19 zeroes.
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So, compared with our population of about 7 billion, these invertebrates outnumber us by more than a billion to one.
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Their astounding numbers exist at the species level, as well.
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There are more than 60,000 vertebrate species on the planet.
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But the class of insects contains a million known species, and many others that haven't been classified.
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In fact, these critters make up approximately 75% of all animals on Earth.
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So, what's their secret to success?
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Insect abundance comes down to many things that together make them some of the most adaptable and resilient creatures, beginning with their impressive ability to breed.
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Many species can produce hundreds of offspring within their lifetimes.
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Most offspring will die, but more than enough will survive into adulthood to reproduce.
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Offspring also mature very rapidly, so the cycle of reproduction resumes quickly, and can occur over and over again in a short time.
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These numbers mean that as a class, insects harbor a tremendous amount of genetic diversity.
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The different species contain a wealth of genetic data that give them the necessary adaptations they need to thrive in a range of environments across the planet.
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Even some of the most extreme environments are in bounds; Flat bark beetles can live at -40 degrees Fahrenheit, Sahara Desert ants can venture out when surface temperatures exceed 155 degrees, and some bumblebees can survive 18,000 feet above sea level.
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Insect exoskeletons also work like body armor, protecting insects against the outside world and helping them cope with habitats that other creatures can't.
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Even their small size, which we might see as a disadvantage, is something they use to their benefit.
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Because most species are so tiny, millions of insects can inhabit a small space and make use of all the available resources within it.
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This means they can occupy hundreds of different niches across ecosystems.
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Some insects survive by eating the roots, stems, leaves, seeds, pollen, and nectar of specific plants.
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Others, like wasps, make use of live insects by paralyzing the victims and laying their eggs inside so that when the hatchlings emerge, they can eat their way out and get nourishment.
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Mosquitos and biting flies feed on blood, taking advantage of this unusual resource to ensure their survival.
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And a whole bunch of other insects have built a niche around feces.
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Flies lay their eggs there, and some beetles even build large balls out of animal dung, which they eat and use as accommodation for their eggs.
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And then there's the insects' mighty power of metamorphosis.
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This trait not only transforms insects, but also helps them maximize the available resources in an ecosystem.
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Take butterflies.
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In their larval caterpillar form, they chomp hungrily through leaves at a rapid rate to help them grow and spin cocoons.
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But when they emerge as butterflies, these insects feed only on flower nectar.
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Metamorphosis means the larvae and adults of one species will never compete for the same resource, so they successfully share an ecological niche without limiting their own success.
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This process is so efficient that an incredible 86% of insect species undergo complete metamorphosis.
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We're big and they're small, so it's easy to forget that these critters are moving in their millions all around us, all the time.
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But examine almost any patch of ground, and you're sure to find them there.
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Their numbers are immense, and their success is unmatched.
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We may have to accept that it's insects, not us, that are the true conquerors of the planet.
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为什么要通过这个视频练习口语？
在这段视频中，Murry Gans 讨论了昆虫为何如此之多，这不仅是一个有趣的主题，也为英语学习者提供了一个极佳的口语练习机会。通过模仿演讲者的说话方式，学习者可以更好地掌握不同的表达方式和专门的词汇。观看这样的视频，不仅能增强语言理解力，还能提高你的英语口语技能，特别是在进行雅思口语练习时。这种"看YouTube学英语"的方法，能够有效提升自己的发音和表达能力，帮助你在真实对话中更加自信。
语法与表达在上下文中的应用
在这段视频中，演讲者使用了一些关键的语法结构和表达方式，例如：
- 被动语态：例如“昆虫被认为是地球上数量最多的生物”。这样可以强调结果，而不是行动者。
- 条件句：例如“如果昆虫突然变成大型生物...”。通过这种结构，演讲者表达了假设和想象的情况。
- 段落连接词：视频中频繁使用“但是”、“因此”等连接词，使得不同的观点和信息流畅连接，便于理解。
通过"英语影子跟读"这种方式，学习者可以复述和练习这些结构，进而确保更准确地应用于自己的口语中。
常见的发音陷阱
在观看视频时，你可能会遇到一些发音上比较难的单词或短语，例如“metamorphosis”（变形）和“exoskeleton”（外骨骼）。这类术语由于其独特的音节和发音方式，可能会造成学习者的困惑。为了“提高英语发音”，建议多次重复这些词，尝试模仿演讲者的语调和重音。此外，Murry Gans 的某些音调和节奏也可以作为练习的参考，特别是在细节描述的时候，可以帮助你在口语交流时更加流畅。
通过这种方式，学习者可以巩固发音技巧，提升与他人沟通的能力。坚持练习，享受通过"shadowspeaks"和视频学习英语的过程，你会发现自己在口语表达方面会有显著的提升！
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。