跟读练习: Nanotechnology: technology on a small scale | IELTS LISTENING TEST | SECTION-4 - 通过视频学习英语口语
选择练习模式
每种模式都会打开全屏练习室。
55 句
如果句子过短或过长，请点击 Edit 进行调整。
1
You will hear a woman talking to a group of first year science undergraduates about the developing science of nanotechnology.
2
First, you have some time to look at questions 31 to 40.
3
Now listen carefully and answer questions 31 to 40.
4
Today we're going to look at an important area of science, namely nanotechnology. So, what is it?
5
Nano means tiny, so it's science and engineering on the scale of atoms and molecules.
6
The idea is that by controlling and rearranging atoms, you can literally create anything.
7
However, as we'll see, the science of the small has some big implications, affecting us in many ways.
8
There's no doubt that nanotechnology promises so much for civilization.
9
However, all new technologies have their teething problems.
10
and with nanotechnology, society often gets the wrong idea about its capabilities.
11
Numerous science fiction books and movies have raised people's fears about nanotechnology.
12
With scenarios such as inserting little nanorobots into your body that monitor everything you do without you realising it.
13
or self -replicating nano robots that eventually take over the world.
14
So how do we safeguard such a potentially powerful technology?
15
Some scientists recommend that nanoparticles be treated as new chemicals, with separate safety tests and clear labelling.
16
They believe that greater care should also be taken with nanoparticles in laboratories and factories.
17
Others have called for a withdrawal of new nanoproducts, such as cosmetics, and a temporary halt to many kinds of nanotech research.
18
But as far as I'm concerned, there's a need to plough ahead with the discoveries and applications of nanotechnology.
19
I really believe that most scientists would welcome a way to guard against unethical uses of such technology.
20
We can't go around thinking that all innovation is bad.
21
All advancement is bad.
22
As with a debate about any new technology, It is how you use it that's important.
23
So, let's look at some of its possible uses.
24
Thanks to nanotechnology, there could be a major breakthrough in the field of transportation, with the production of more durable metals.
25
These could be virtually unbreakable, lighter and much more pliable, leading to planes that are 50 times lighter than at present.
26
Those same improved capabilities will dramatically reduce the cost of travelling into space.
27
making it more accessible to ordinary people and opening up a totally new holiday destination.
28
In terms of technology, the computer industry will be able to shrink computer parts down to minute sizes.
29
We need nanotechnology in order to create a new generation of computers
30
that will work even faster and will have a million times more memory, but will be about the size of a sugar cube.
31
Nanotechnology could also revolutionise the way that we generate power.
32
The cost of solar cells will be drastically reduced, so harnessing this energy will be far more economical than at present.
33
But nanotechnology has much wider applications than this and could have an enormous impact on our environment.
34
For instance, tiny airborne nanorobots could be programmed to actually rebuild the ozone layer,
35
which could lessen the impact of global warming on our planet.
36
That's a pretty amazing thought, isn't it?
37
On a more local scale,
38
this new technology could help with the clean -up of environmental disasters as nanotechnology will allow us to remove oil
39
and other contaminants from the water far more effectively.
40
and if nanotechnology progresses as expected as a sort of building block set of about 90 atoms
41
then you could build anything you wanted from the bottom up In terms of production, this means that you only use what you need.
42
And so there wouldn't be any waste.
43
The notion that you could create anything at all has major implications for our health.
44
It means that we'll eventually be able to replicate anything.
45
This would have a phenomenal effect on our society.
46
In time, it could even lead to the eradication of famine through the introduction of machines
47
that produce food to feed the hungry.
48
But it's in the area of medicine that nanotechnology may have its biggest impact.
49
How we detect disease will change as tiny biosensors are developed to analyze tests in minutes rather than days.
50
There's even speculation nanorobots could be used to slow the aging process, lengthening life expectancy.
51
As you can see, I'm very excited by the implications that could be available to us in the next few decades.
52
Just how long it'll take, I honestly don't know.
53
That is the end of Section 4.
54
You now have half a minute to check your answers.
55
Thank you.
同频道
B22
Dolphins | IELTS LISTENING TEST | SECTION-2
IELTS PrepUniversity Students
C12
Monosodium Glutamate (MSG) With Answers | IELTS LISTENING SECTION-4
IELTS PrepUniversity Students
B22
Global Design Competition | IELTS LISTENING TEST | SECTION-3
IELTS PrepUniversity Students
B28
Win ridge Forest Railway Park | IELTS LISTENING TEST | SECTION-2
IELTS PrepUniversity Students
B22
New City developments | IELTS LISTENING TEST | SECTION-2
IELTS PrepHigh School StudentsUniversity Students
B12
Type of Job Required With Answers | IELTS LISTENING SECTION-1
IELTS PrepInterview EnglishUniversity Students
B22
Rocky Bay Field trip | IELTS LISTENING TEST | SECTION-3
IELTS PrepUniversity Students
B16
Apartments Facilities Other Information Cost | IELTS LISTENING TEST | SECTION-1
IELTS PrepTravel EnglishUniversity Students
B21
Personal Assessment | IELTS LISTENING TEST | SECTION-2
IELTS PrepTOEFL PrepUniversity Students
B12
Health Centers | IELTS LISTENING TEST | SECTION-1
IELTS PrepUniversity StudentsWorking Adults
B21
Subject of drawing Change to be made | IELTS LISTENING TEST | SECTION-3
IELTS PrepCambridge Exam PrepHigh School Students
C126
The use of soil to reduce carbon dioxide in the atmosphere | IELTS LISTENING TEST | SECTION-4
IELTS PrepTOEFL PrepUniversity Students
B22
Improvement to Red hill suburb | IELTS LISTENING TEST | SECTION-2
IELTS PrepUniversity StudentsWorking Adults
B110
Changes in Barford over last 50 years | IELTS LISTENING TEST | SECTION-2
IELTS PrepHigh School StudentsUniversity Students
B23
Manham Port | IELTS LISTENING TEST | SECTION-2
IELTS PrepUniversity StudentsWorking Adults
B12
Dreamtime Travel Agency With Answers | IELTS LISTENING Section-1
IELTS PrepTravel EnglishUniversity Students
B22
In her Home Country | IELTS LISTENING TEST | SECTION-3
IELTS PrepTOEFL PrepUniversity Students
B12
Transport from Airport to Milton With Answers | IELTS LISTENING SECTION-1
IELTS PrepTravel EnglishUniversity Students
B13
In the library George found | IELTS LISTENING TEST | SECTION-1
IELTS PrepHigh School StudentsUniversity Students
B15
Thorndyke's Builders | IELTS LISTENING TEST
IELTS PrepTOEIC PrepUniversity Students
FOR YOU
推荐视频
C16
40 句
I10T4S4 - Nanotechnology
IELTS PrepUniversity Students
C12
132 句
Nishad Sanzagiri | Technology Empires Debate | Proposition (1/6)
IELTS PrepTOEFL PrepUniversity Students
C15
24 句
English vocabulary in use Advanced Unit 2
IELTS PrepTOEFL PrepCambridge Exam Prep
C171
15 句
We Won’t Explore the Galaxy...
IELTS PrepTOEFL PrepUniversity Students
C11
59 句
Cambridge Ielts 16 Reading test 2 Passage 2
IELTS PrepTOEFL PrepCambridge Exam Prep
B23
33 句
TECHNOLOGY 1: What technology do people currently use?
IELTS PrepTOEFL PrepUniversity Students
C16
66 句
Map of Science (and everything else)
British AccentIELTS PrepTOEFL PrepUniversity Students
C138
16 句
ALBRECHT FUND SHADOWING_Technology Magnifies Who We Are
IELTS PrepTOEFL PrepUniversity Students
C158
10 句
The Next Atomic Bomb Is Made of DNA
IELTS PrepTOEFL PrepUniversity Students
C16
32 句
Anti-matter & nuclear weapons: Why technology is always a double-edge sword | Don Lincoln
IELTS PrepTOEFL PrepUniversity Students
C12
84 句
Kathy's dissertation on water pumps: IELTS LISTENING Vol 5 Test 6 Section 3
IELTS PrepTOEFL PrepUniversity Students
C16
576 句
30-Minute C1 English Listening Practice || Improve Your Advanced English Skills 🎧
IELTS PrepTOEFL PrepUniversity Students
本课的词汇与口语要点
这段视频共有 55 个句子、749 个单词可供跟读。 讲话部分时长为 6:52。 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。 82% 的单词属于英语最常用的 3,000 词，其余的词建议在练习前先学一下。
视频中的重点词汇
视频中 15 个不太常见的单词，附发音和释义：
- atom /ˈætəm/ (名词) — 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/ (形容词) — 飢餓 /饥饿, 餓 /饿. Affected by hunger; having the physical need for food.
- scientist /ˈsaɪəntəst/ (名词) — 科學家 /科学家. 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/ (形容词) — 暫時 /暂时. Not permanent; existing only for a period or periods of time.
- carefully /ˈkɛɹf(ə)li/ (副词) — 小心地. With care; attentively, circumspectly.
- discovery /dɪˈskʌv.ɹi/ (名词) — 發現 /发现. Something discovered.
- fiction /ˈfɪkʃən/ (名词) — 虛構文學 /虚构文学, 小說 /小说. Literary type using invented or imaginative writing, instead of real facts, usually written as prose.
- label /ˈleɪ.bəl/ (名词) — 標籤 /标签, 簽條 /签条. A small ticket or sign giving information about something to which it is attached or intended to be attached.
- ordinary /ˈɔɹdɪnɛɹi/ (形容词) — 普通, 平常. Having regular jurisdiction; now only used in certain phrases.
- layer /ˈleɪ̯ɚ/ (名词) — 層 /层. A single thickness of some material covering a surface.
- disaster /dɪˈzɑːs.təː/ (名词) — 災難 /灾难, 災害 /灾害. 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/ (名词) — 顯示器 /显示器. Someone who watches over something; a person in charge of something or someone.
- innovation /ˌɪn.əˈveɪ.ʃən/ (名词) — 革新, 創新 /创新. The act of innovating; the introduction of something new, in customs, rites, etc.
- laboratory /ˈlæb(ə)ɹəˌtɔɹi/ (名词) — 實驗室 /实验室. A room, building or institution equipped for scientific research, experimentation or analysis.
- enormous /ɪˈnɔː.məs/ (形容词) — 巨大的. Extremely large; greatly exceeding the common size, extent, etc.
视频中出现的短语动词
- look at (动词) — 觀察 /观察, 看. To observe or watch.
- take over (动词) — 接管, 接手. To assume control of something, such as a business or enterprise, and sometimes by force.
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 atom, hungry, scientist 这类单词。
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 |
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。