跟读练习: I10T4S4 - Nanotechnology - 通过视频学习英语口语

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Today we’re going to look at an important area of science, namely nanotechnology.

So what is it?

Nano means tiny, so it’s science and engineering on the scale of atoms and molecules.

The idea is that by controlling and rearranging atoms, you can literally create anything.

However, as we’ll see, the science of the small has some big implications affecting us in many ways.

There’s no doubt that nanotechnology promises so much for civilisation.

However, all new technologies have their teething problems.

And with nanotechnology, society often gets the wrong idea about its capabilities.

Numerous science-fiction books and movies have raised people's fears about nanotechnology - with scenarios such as inserting little nano-robots into your body that monitor everything you do without you realising it, or self-replicating nano-robots that eventually take over the world.

So how do we safeguard such a potentially powerful technology?

Some scientists recommend that nano-particles be treated as new chemicals with separate safety tests and clear labelling.

They believe that greater care should also be taken with nano-particles in laboratories and factories.

Others have called for a withdrawal of new nano products such as cosmetics and a temporary halt to many kinds of nanotech research.

But as far as I’m concerned there's a need to plough ahead with the discoveries and applications of nanotechnology.

I really believe that most scientists would welcome a way to guard against unethical uses of such technology.

We can’t go around thinking that all innovation is bad, all advancement is bad.

As with the debate about any new technology, it is how you use it that’s important.

So let’s look at some of its possible uses.

Thanks to nanotechnology, there could be a major breakthrough in the field of transportationwith the production of more durable metals.

These could be virtually unbreakable, lighter and much more pliable leading to planes that are 50 times lighter than at present.

Those same improved capabilities will dramatically reduce the cost of travelling into space making it more accessible to ordinary people and opening up a totally new holiday destination.

In terms of technology, the computer industry will be able to shrink computer parts down to minute sizes.

We need nanotechnology in order to create a new generation of computers that will work even faster and will have a million times more memory but will be about the size of a sugar cube.

Nanotechnology could also revolutionise the way that we generate power.

The cost of solar cells will be drastically reduced so harnessing this energy will be far more economical than at present.

But nanotechnology has much wider applications than this and could have an enormous impact on our environment.

For instance, tiny airborne nano-robots could be programmed to actually rebuild the ozone layer, which could lessen the impact of global warming on our planet.

That’s a pretty amazing thought, isn’t it?

On a more local scale, this new technology could help with the clean-up of environmental disasters as nanotechnology will allow us to remove oil and other contaminants from the water far more effectively.

And, if nanotechnology progresses as expected - as a sort of building block set of about 90 atoms - then you could build anything you wanted from the bottom up.

In terms of production, this means that you only use what you need and so there wouldn't be any waste.

The notion that you could create anything at all has major implications for our health.

It means that we’ll eventually be able to replicate anything.

This would have a phenomenal effect on our society.

In time it could even lead to the eradication of famine through the introduction of machines that produce food to feed the hungry.

But it’s in the area of medicine that nanotechnology may have its biggest impact.

How we detect disease will change as tiny biosensors are developed to analyse tests in minutes rather than days.

There’s even speculation nano-robots could be used to slow the ageing process, lengthening life expectancy.

As you can see, I’m very excited by the implications that could be available to us in the next few decades.

Just how long it’ll take, I honestly don't know.

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FOR YOU

本课的词汇与口语要点

这段视频共有 40 个句子、699 个单词可供跟读。讲话部分时长为 5:28。说话人语速平稳，每分钟约 128 个词，很适合跟读。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
robot 名词	/ˈɹoʊ.bɑt/	機器人 /机器人, 機械人 /机械人
atom 名词	/ˈætəm/	原子
hungry 形容词	/ˈhʌŋ.ɡɹi/	飢餓 /饥饿, 餓 /饿
scientist 名词	/ˈsaɪəntəst/	科學家 /科学家
particle 名词	/ˈpɑɹtək(ə)l/	粒子
temporary 形容词	/ˈtɛmp(əˌɹ)ɛɹi/	暫時 /暂时
discovery 名词	/dɪˈskʌv.ɹi/	發現 /发现
fiction 名词	/ˈfɪkʃən/	虛構文學 /虚构文学, 小說 /小说
label 名词	/ˈleɪ.bəl/	標籤 /标签, 簽條 /签条
ordinary 形容词	/ˈɔɹdɪnɛɹi/	普通, 平常
layer 名词	/ˈleɪ̯ɚ/	層 /层
disaster 名词	/dɪˈzɑːs.təː/	災難 /灾难, 災害 /灾害
monitor 名词	/ˈmɑ.nɪ.tɚ/	顯示器 /显示器
innovation 名词	/ˌɪn.əˈveɪ.ʃən/	革新, 創新 /创新
laboratory 名词	/ˈlæb(ə)ɹəˌtɔɹi/	實驗室 /实验室

视频中出现的短语动词

单词	释义
take over 动词	接管, 接手

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	be treated · be taken · could be programmed
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	have raised · have called

需要注意的发音

说话人用了 10 次缩略和弱读形式，例如 I'm, we'll, can't。请按听到的简短形式来说。

“th” 音: withdrawal /wɪðˈdɹɔ(ə)l/, breakthrough /ˈbɹeɪk.θɹuː/, lengthen /ˈlɛŋθən/, teethe /tiːð/, unethical /ʌnˈɛθɪkəl/
“sh” 和 “zh” 音: implication /ˌɪmpləˈkeɪʃən/, fiction /ˈfɪkʃən/, potentially /pəˈtɛnʃ(ə)li/, innovation /ˌɪn.əˈveɪ.ʃən/, destination /dɛstɪˈneɪʃən/
长单词——注意重音位置: implication /ˌɪmpləˈkeɪʃən/, capability /ˌkeɪ.pəˈbɪl.ɪ.ti/, temporary /ˈtɛmp(əˌɹ)ɛɹi/, ordinary /ˈɔɹdɪnɛɹi/, potentially /pəˈtɛnʃ(ə)li/

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 robot, atom, hungry 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: I10T4S4 - Nanotechnology - 通过视频学习英语口语

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