跟读练习: What is Biodiversity? - 通过视频学习英语口语
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In science, often when talking about living things and their environments, we hear the term biodiversity, and it's an important concept to understand.
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So, let's take a closer look at what this term means.
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Thank you.
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The word bio comes from the Greek word for life, while diversity means variety.
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So, biodiversity essentially refers to the variety of life.
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It's not just about how many organisms live in an area.
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but about how many different kinds of organisms there are.
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you you For instance, a forest with many kinds of plants,
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such as trees, shrubs, ferns, grasses, and moss, has high biodiversity.
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even if the total number of plants isn't extremely large.
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On the other hand, a field with only one type of grass might have millions of individual plants.
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But its biodiversity is very low because it lacks variety.
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So, biodiversity is all about the variety of life in a particular area.
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And it exists even in small, everyday places like our backyards.
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you you Let's compare two types of home gardens to understand biodiversity in action.
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First, imagine a garden that's mostly a neatly trimmed lawn, with a single type of flowering bush.
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It's tidy and simple but it doesn't offer much variety.
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You might see a few bees buzzing around or the occasional bird stopping by.
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But it's not very biodiverse because it provides limited food and shelter for different species.
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Now, picture a different garden filled with a mix of fruit trees, vegetable plants, flowering shrubs, wildflowers,
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grasses, and even a small pond with scattered water lilies.
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This type of garden teems with life.
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Not just because of the great variety of plants, Thank you but also due to the diversity of animals it supports.
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like bees, Butterflies ladybugs, frogs, dragonflies, fish, and birds.
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Together, the variety of plants and the pond create a rich habitat that supports a wide range of species.
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These two gardens demonstrate how biodiversity works.
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The more variety there is in the environment, the more life it can support.
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Biodiversity is influenced by several factors, including the availability of water,
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sunlight, temperature, shelter, and the overall conditions of an area.
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Plenty of water and sunlight allow plants to thrive, creating food and shelter for a wide variety of animals.
日照、温度、遮蔽条件以及一个区域的整体环境状况。
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you.
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Areas with these abundant resources and mild conditions typically support high biodiversity.
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while extreme environments often limit life to specially adapted organisms.
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you For example, Tropical rainforests, with their plentiful sunlight, consistent rainfall,
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and dense vegetation, are among the most biodiverse places on Earth.
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These conditions enable a rich variety of plants to grow, which, in turn, provide food and habitats for countless animals and other organisms.
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Thank you.
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The tropical rainforest supports a vast array of insects and other invertebrates.
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Bye.
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colorful birds, Thank you.
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various amphibians and reptiles, as well as mammals like jaguars, monkeys, and sloths.
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Fungi, such as mushrooms, often grow on the rainforest floor
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recycling the remains of dead plants and animals back into the diverse ecosystem.
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you In contrast, deserts, with their scorching temperatures, scarce water, and limited plant life, support far fewer species.
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you Organisms like camels, snakes,
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lizards and hardy shrubs, are adapted to survive in these harsh conditions.
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But the overall biodiversity remains much lower than in a rainforest.
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you These examples show how environmental factors shape the variety of life in different ecosystems.
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Thank you.
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Finally, let's consider the biodiversity of Antarctica.
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you versus tropical coral reefs.
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Thank you.
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you Antarctica, the driest place on the planet and a land of ice and cold, has tough living conditions.
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you Yet it isn't entirely lifeless.
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fish, penguins, seals, migrating whales, and microscopic plankton make up some of its limited biodiversity.
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you However, when compared to tropical coral reefs, Antarctica's biodiversity is much lower.
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Coral reefs, often called the rainforests of the sea, are among the most biodiverse places on Earth.
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These vibrant underwater ecosystems thrive in warm, shallow waters with abundant sunlight.
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The coral -filled environment creates a wealth of habitats and food sources for countless species.
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including thousands of fish and sharks.
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crustaceans like crabs and lobsters, Thank you.
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octopus and squid, sea turtles, and marine mammals such as dolphins.
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you This rich variety of life makes coral reefs a vital and flourishing part of our planet's marine ecosystems.
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Biodiversity is vital for maintaining healthy ecosystems and a thriving planet.
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By understanding what biodiversity is, What affects it? and appreciating the incredible variety of life in different places.
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we can see why protecting it is essential for the health of all living things.
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Thanks for watching.
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If you enjoyed this learning journey, don't forget to like and subscribe and join us for more adventures into the world around us.
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you you you .
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本课的词汇与口语要点
这节 B1 级别的口语课以视频“What is Biodiversity?”为素材。 视频中反复出现的词有：biodiversity, variety, plant, rainforest, ecosystem。 这段视频共有 69 个句子、791 个单词可供跟读。 讲话部分时长为 7:14。 说话人语速较慢，每分钟约 109 个词，你有足够的时间模仿每一个音。 只有 74% 的单词属于英语最常用的 3,000 词，词汇难度较高。
视频中的重点词汇
视频中最难的 15 个单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| biodiversity 名词 | /ˌbaɪoʊdəˈvɚsəti/ | 生物多樣性 /生物多样性 |
| rainforest 名词 | /ˈɹeɪn.fɔɹ.ɪst/ | 雨林 |
| organism 名词 | /ˈɔɹ.ɡəˌnɪz.əm/ | 生物, 有機體 /有机体 |
| ecosystem 名词 | /ˈikoʊˌsɪstəm/ | 生態系 /生态系, 生態系統 /生态系统 |
| coral 名词 | /ˈkɔɹəl/ | 珊瑚 |
| reef 名词 | /ɹiːf/ | 礁, 暗礁 |
| sunlight 名词 | /ˈsʌnˌlaɪt/ | 陽光 /阳光, 日光 |
| tropical 形容词 | /ˈtɹɑ.pɪ.kəl/ | 熱帶 /热带, 回歸線 /回归线 |
| shrub 名词 | /ˈʃɹʌb/ | 灌木, 灌木叢 /灌木丛 |
| thrive 动词 | /θɹajv/ | 繁榮 /繁荣 |
| shelter 名词 | /ˈʃɛltə/ | 棲身之地 /栖身之地, 住處 /住处 |
| mammal 名词 | /ˈmæməl/ | 哺乳類 /哺乳类, 哺乳動物 /哺乳动物 |
| abundant 形容词 | /əˈbʌn.dənt/ | 豐富 /丰富 |
| countless 形容词 | /ˈkaʊntləs/ | 無數 /无数 |
| pond 名词 | /pɑnd/ | 池塘, 池 |
视频中出现的短语动词
| 单词 | 发音 | 释义 |
|---|---|---|
| make up 动词 | /ˌmeɪk ˈʌp/ | 組成 /组成 |
视频中的语法
说话人最常用的结构，并附上视频中的原话：
| 结构 | 视频中的用法 |
|---|---|
| 被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的 | is influenced · are adapted |
| 最高级 the -est / the most … — 一组中最高或最低的 | the most biodiverse · the driest |
| 用 “might / may” 表可能 might/may + 动词 — 有可能但不确定的事 | might have · might see |
需要注意的发音
说话人用了 4 次缩略和弱读形式，例如 isn't, doesn't, don't。请按听到的简短形式来说。
- “sh” 和 “zh” 音: shrub /ˈʃɹʌb/, shelter /ˈʃɛltə/, crustacean /kɹʌsˈteɪʃən/, flourish /ˈflʊ̈ɹ.ɪʃ/, mushroom /ˈmʌʃˌɹuːm/
- 长单词——注意重音位置: biodiversity /ˌbaɪoʊdəˈvɚsəti/, organism /ˈɔɹ.ɡəˌnɪz.əm/, ecosystem /ˈikoʊˌsɪstəm/, diversity /daɪˈvɜː(ɹ)sɪti/, invertebrate /ɪnˈvəːtɪbrət/
中文母语者容易读错的音：
- /v/ — 不要读成 /w/，上齿轻触下唇: biodiversity /ˌbaɪoʊdəˈvɚsəti/, thrive /θɹajv/, diversity /daɪˈvɜː(ɹ)sɪti/, invertebrate /ɪnˈvəːtɪbrət/, vibrant /ˈvaɪbɹənt/
- 词尾辅音 — 要读清楚，后面不要加元音: rainforest /ˈɹeɪn.fɔɹ.ɪst/, reef /ɹiːf/, sunlight /ˈsʌnˌlaɪt/, shrub /ˈʃɹʌb/, thrive /θɹajv/
- /r/ 和 /l/ 的区别: coral /ˈkɔɹəl/, tropical /ˈtɹɑ.pɪ.kəl/, dragonfly /ˈdɹæɡənˌflaɪ/, recycle /ɹəˈsaɪkəl/, reptile /ˈɹɛp.taɪl/
如何用这段视频练习
- 先完整听一遍视频，不要开口，记下不认识的单词。
- 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
- 录下自己的声音并与原声对比，特别注意 biodiversity, rainforest, organism 这类单词。
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。