跟读练习: Plastic Isn’t The Problem You’ve Been Made To Believe - 通过视频学习英语口语

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Plastic isn't the problem we've been told it is.

We've been told it's this terrible stuff that won't naturally rot away

and contaminate our environment for hundreds if not thousands of years.

But recent research has made it increasingly clear that this just isn't so.

The true stories both better and worse.

I have a brief summary.

Environmental protection organizations have preached for half a century that plastic degrades very, very slowly.

The Worldwide Fund for Nature, for example, says that plastic bottles last 450 years.

According to the United Nations Environment Program, it can take thousands or even tens of thousands of years for plastic to degrade.

And according to Greenpeace, plastic never goes away.

You may ask, indeed, I think you should ask, how do they know, given that plastic didn't become widely used until about a century ago?

And haven't any of these people ever seen plastic garden furniture?

You can basically see the stuff rotting away with your own eyes.

So what's really going on?

We think of plastic as the epitome of an artificial product, but I think that artificial is not a helpful terminology.

We're part of nature and I don't see why something we produce is any less natural than what other living beings produce.

I think it makes more sense to refer to plastic as man -made

or human -made if you want to be politically super correct.

Plastics made of long chains of molecules called polymers and primarily produced from fossil fuels.

That makes it what chemists call organic.

Though plastics that we use in everyday life almost always contain other chemicals, many inorganic, to add color or elasticity or stability.

That's right, plastics often have other chemicals added to make them more durable.

This already tells you that the idea that plastics don't decay is somewhat questionable.

Indeed, we know today that plastics begin to break down into smaller and smaller fragments incredibly quickly,

giving rise to micro and later nanoplastics that have now spread around the entire globe.

When this was first reported in 1972 by Edward Carpenter and Kenneth Smith, Other scientists weren't just surprised.

They were openly hostile.

According to Carpenter, the colleagues thought that the paper should never have been published and he was told to stick to biology.

They were perfectly right, though.

Micro and nanoplastics are now to be found anywhere from the Sahara Desert to the Arctic to the oceans.

We literally eat and breathe the stuff.

Now, that plastic fragments doesn't mean that it entirely chemically decays,

but it does effectively increase the surface of the plastic and that means it becomes much more susceptible to sunlight, abrasion and chemical reactions.

The shedding of micro and nanoplastics happened surprisingly quickly.

A 2016 researcher showed

that it took less than two months for a plastic coffee cup to shed nanoparticles

when in water and exposed to UV light.

Last year then, a group from Northeastern University measured how fast these particles undergo photodegradation in water,

that is, how fast the polymers break apart into carbon dioxide other gases and other organic and inorganic substances.

They estimated that a polystyrene particle with about one millimeter diameter would need about five and a half years,

whereas a polypropylene particle with merely 100 nanometers diameter would fall apart in about half a year.

This is roughly compatible with a finding from 2024,

which found that a millimeter -sized plastic particle takes about half a year to decompose in water illuminated by light.

It's also roughly compatible with a 2026 study from a Chinese group

that looked at the decay of thin sheets of polypropylene and found a half -life of about a month.

These are all data for specific types of plastic under specific circumstances.

They don't tell us, for example, what happens to trash buried in soil.

But my takeaway is that it's probably not going to take 10 ,000s of years for plastic to decompose.

Let me be clear that I'm not saying that plastic is not a problem.

It very clearly is.

It's terrible for birds and fish who swallow it and even if it dissolves, it leaves behind potentially toxic chemicals.

I'm not saying that plastic is not a problem.

I'm just saying that the problem isn't that plastic doesn't decay.

Indeed, I'd go so far to say that it'd be better if it wouldn't decay, that'd make it easier to remove,

and it'd keep the carbon stored.

We have also known for a decade that some bacteria have evolved the ability to digest plastic.

There's also been a story that mealworms can do this too, but this hasn't been independently reproduced and has remained somewhat controversial.

In any case, seeing that plastics contain a lot of usable chemical energy,

it seems likely to me that some soil microbes will soon learn to digest it.

What about the health effects of ingesting microplastics?

I went through this in a recent video.

And to make a long story short, there's currently no convincing evidence that microplastics have detrimental health effects.

This does not mean they have no health effects.

It merely means that the evidence is weak or non -existent.

The story

that plastic could take tens of thousands of years to rot was widely spread despite not having any evidence behind it whatsoever.

It's only now that we get to see the numbers.

Unfortunately, it might just be that the myth will live longer than the plastic itself.

I find it difficult to think about how much we've damaged our environment, but I feel much better since I have joined

Planet Wild, because it shows me that together we can help nature recover.

Planet Wild is a community -based environmental protection organization.

They're funding the restoration of ecosystems to preserve our nature and wildlife by partnering with different organizations every month.

I've been part of their community for years now, and I've been really impressed by their work.

They document all their projects with video reports that you can find right here on YouTube, so you can see your impact right away.

In their recent mission, they brought wildlife back to the city of Bristol by planting wetlands.

This is a lovely example of the hands -on work that

Planet Wild is doing.

Joining Planet Wild is a simple yet effective way to help this planet.

So if you want to do something that matters, join Planet Wild.

You can contribute whatever amount feels right.

And if you're one of the next 100 people to sign up using my code, I'll cover your first month.

Just scan the QR code or click on the link in the description.

And don't worry, you can cancel any time.

If you want to see them in action first, watch their mission Restoring Wetlands.

Thanks for watching.

See you tomorrow.

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FOR YOU

本课的词汇与口语要点

这节口语课以视频“Plastic Isn’t The Problem You’ve Been Made To Believe”为素材。视频中反复出现的词有：plastic, planet, decay, chemical, Wild。这段视频共有 86 个句子、1136 个单词可供跟读。讲话部分时长为 7:14。说话人语速自然，每分钟约 157 个词，接近日常对话。只有 81% 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 15 个值得学习的单词，附发音和释义：

单词	发音	释义
particle 名词	/ˈpɑɹtək(ə)l/	粒子
microwave 名词	/ˈmaɪkɹoʊˌweɪv/	微波
soil 名词	/sɔɪl/	土壤, 泥土
organic 形容词	/ɔːˈɡænɪk/	生物的
merely 副词	/ˈmɪəli/	只是, 只不過 /只不过
wildlife 名词	/ˈwaɪldlaɪf/	野生動物 /野生动物, 野生生物
artificial 形容词	/ˌɑː.tɪˈfɪʃ.əl/	人造的
diameter 名词	/daɪˈæmɪdɚ/	直徑 /直径
compatible 形容词	/kəmˈpæt.ə.bəl/	兼容的, 相容的
digest 动词	/daɪˈd͡ʒɛst/	消化
polymer 名词	/ˈpɑ.lɪ.mɚ/	聚合體 /聚合体
fragment 名词	/ˈfɹæɡmənt/	碎片, 碎屑
everyday 形容词	/ˈɛvɹiˌdeɪ/	日常的
thin 形容词	/ˈθɪn/	бә, 薄
refer 动词	/ɹɪˈfɜː/	談到 /谈到

视频中出现的短语动词

单词	释义
go away 动词	離開 /离开, 走
go through 动词	通過 /通过
leave behind 动词	遺棄 /遗弃
sign up 动词	報名 /报名, 註冊 /注册

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
现在完成时 have/has + 过去分词 — 过去发生但与现在仍有关联的事	we've been told · has made · have preached
被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的	we've been told · have been published · be found

需要注意的发音

说话人用了 31 次缩略和弱读形式，例如 don't, I'm, isn't。请按听到的简短形式来说。

“th” 音: thin /ˈθɪn/, breathe /bɹiːð/, myth /mɪθ/
“sh” 和 “zh” 音: artificial /ˌɑː.tɪˈfɪʃ.əl/, trash /tɹæʃ/, sheet /ʃit/, potentially /pəˈtɛnʃ(ə)li/, controversial /ˌkɑn.tɹəˈvɝ.ʃəl/
长单词——注意重音位置: artificial /ˌɑː.tɪˈfɪʃ.əl/, diameter /daɪˈæmɪdɚ/, compatible /kəmˈpæt.ə.bəl/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, primarily /ˈpɹaɪ.mə.ɹə.li/

中文母语者容易读错的音：

/v/ — 不要读成 /w/，上齿轻触下唇: microwave /ˈmaɪkɹoʊˌweɪv/, everyday /ˈɛvɹiˌdeɪ/, recover /ɹɪˈkʌvɚ/, convince /kənˈvɪns/, controversial /ˌkɑn.tɹəˈvɝ.ʃəl/
词尾辅音 — 要读清楚，后面不要加元音: microwave /ˈmaɪkɹoʊˌweɪv/, organic /ɔːˈɡænɪk/, wildlife /ˈwaɪldlaɪf/, digest /daɪˈd͡ʒɛst/, fragment /ˈfɹæɡmənt/
/r/ 和 /l/ 的区别: particle /ˈpɑɹtək(ə)l/, roughly /ˈɹʌf.li/, naturally /ˈnæt͡ʃ.(ə.)ɹə.li/, primarily /ˈpɹaɪ.mə.ɹə.li/, incredibly /ɪŋˈkɹɛdɪbli/

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。
先用 0.75 倍速逐句跟读，熟练之后再回到正常速度。
录下自己的声音并与原声对比，特别注意 particle, microwave, soil 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。

影子跟读法: 阅读完整分步指南 →

跟读练习: Plastic Isn’t The Problem You’ve Been Made To Believe - 通过视频学习英语口语

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