跟讀練習: Nanotechnology: technology on a small scale | IELTS LISTENING TEST | SECTION-4 - 通過影片學習英語口語

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55 句

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You will hear a woman talking to a group of first year science undergraduates about the developing science of nanotechnology.

First, you have some time to look at questions 31 to 40.

Now listen carefully and answer questions 31 to 40.

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 civilization.

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 nanorobots 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 nanoparticles be treated as new chemicals, with separate safety tests and clear labelling.

They believe that greater care should also be taken with nanoparticles in laboratories and factories.

Others have called for a withdrawal of new nanoproducts, 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 a 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 transportation, with 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 nanorobots 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 analyze tests in minutes rather than days.

There's even speculation nanorobots could be used to slow the aging 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.

That is the end of Section 4.

You now have half a minute to check your answers.

Thank you.

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本課的詞彙與口語要點

這段影片共有 55 個句子、749 個單詞可供跟讀。講話部分時長為 6:52。說話人語速較慢，每分鐘約 109 個詞，你有足夠的時間模仿每一個音。 82% 的單詞屬於英語最常用的 3,000 詞，其餘的詞建議在練習前先學一下。

影片中的重點詞彙

影片中 15 個不太常見的單詞，附發音和釋義：

atom /ˈætəm/ (名詞) — 原子. The smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons.
hungry /ˈhʌŋ.ɡɹi/ (形容詞) — 飢餓 /飢餓, 餓 /餓. Affected by hunger; having the physical need for food.
scientist /ˈsaɪəntəst/ (名詞) — 科學家 /科學家. One whose activities make use of the scientific method to answer questions regarding the measurable universe. A scientist may be involved in original research…
temporary /ˈtɛmp(əˌɹ)ɛɹi/ (形容詞) — 暫時 /暫時. Not permanent; existing only for a period or periods of time.
carefully /ˈkɛɹf(ə)li/ (副詞) — 小心地. With care; attentively, circumspectly.
discovery /dɪˈskʌv.ɹi/ (名詞) — 發現 /發現. Something discovered.
fiction /ˈfɪkʃən/ (名詞) — 虛構文學 /虛構文學, 小說 /小說. Literary type using invented or imaginative writing, instead of real facts, usually written as prose.
label /ˈleɪ.bəl/ (名詞) — 標籤 /標籤, 簽條 /籤條. A small ticket or sign giving information about something to which it is attached or intended to be attached.
ordinary /ˈɔɹdɪnɛɹi/ (形容詞) — 普通, 平常. Having regular jurisdiction; now only used in certain phrases.
layer /ˈleɪ̯ɚ/ (名詞) — 層 /層. A single thickness of some material covering a surface.
disaster /dɪˈzɑːs.təː/ (名詞) — 災難 /災難, 災害 /災害. An unexpected natural or man-made catastrophe of substantial extent causing significant physical damage or destruction, loss of life or sometimes permanent…
monitor /ˈmɑ.nɪ.tɚ/ (名詞) — 顯示器 /顯示器. Someone who watches over something; a person in charge of something or someone.
innovation /ˌɪn.əˈveɪ.ʃən/ (名詞) — 革新, 創新 /創新. The act of innovating; the introduction of something new, in customs, rites, etc.
laboratory /ˈlæb(ə)ɹəˌtɔɹi/ (名詞) — 實驗室 /實驗室. A room, building or institution equipped for scientific research, experimentation or analysis.
enormous /ɪˈnɔː.məs/ (形容詞) — 巨大的. Extremely large; greatly exceeding the common size, extent, etc.

影片中出現的短語動詞

look at (動詞) — 觀察 /觀察, 看. To observe or watch.
take over (動詞) — 接管, 接手. To assume control of something, such as a business or enterprise, and sometimes by force.

需要注意的發音

說話人用了 10 次縮略和弱讀形式，例如 I'm, we'll, can't。請按聽到的簡短形式來說。

“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/
長單詞——注意重音位置: implication /ˌɪmpləˈkeɪʃən/, capability /ˌkeɪ.pəˈbɪl.ɪ.ti/, temporary /ˈtɛmp(əˌɹ)ɛɹi/, ordinary /ˈɔɹdɪnɛɹi/, potentially /pəˈtɛnʃ(ə)li/

如何用這段影片練習

先完整聽一遍影片，不要開口，記下不認識的單詞。
用正常速度逐句跟讀，每句重複到你的節奏與說話人一致為止。
錄下自己的聲音並與原聲對比，特別注意 atom, hungry, scientist 這類單詞。

影片中的語法

說話人最常用的結構，並附上影片中的原話：

結構	影片中的用法
被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的	be treated · be taken · will be drastically reduced
現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事	have raised · have called

什麼是跟讀法？

跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。

影子跟讀法: 閱讀完整分步指南 →

跟讀練習: Nanotechnology: technology on a small scale | IELTS LISTENING TEST | SECTION-4 - 通過影片學習英語口語

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