쉐도잉 연습: Nanotechnology and Its Applications - 영상으로 영어 말하기 배우기
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Part 4 You will hear part of a lecture on nanotechnology and its applications.
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First, you have some time to look at questions 31 to 40.
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Now listen carefully and answer questions 31 to 40.
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Today's lecture is the first of a series of lectures on nanotechnology.
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Nanotechnology, sometimes shortened to nanotech, refers to the manipulation of matter on an atomic and molecular level.
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It's the science, engineering and technology conducted at the nanoscale, which is about 1 to 100 nanometres.
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It is the study and application of extremely small things and can be used across all the other science fields.
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Just how small is that?
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A nanometre is one billionth of a metre.
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The idea of nanoscale research first started from a physicist called Richard Feynman in 1959,
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He envisaged a process in which scientists would be able to manipulate and control individual atoms and molecules.
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In fact, it wasn't until 1981, with the invention of a special kind of microscope, that modern nanotechnology truly began.
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Even though nanotechnology has created many new materials and devices with a vast range of applications, there is always concern over these unnatural products.
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Many people are worried that they may pose a threat to the environment, health and safety, also known as EHS.
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In order to better understand and evaluate the potential harm, risk assessment has been introduced.
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There are also ongoing international collaborations on nanoEHS research and related policy issues.
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Despite the concern nanotechnology has benefited society in unexpected ways, In the food processing industry,
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nanotechnology is leveraged against iron deficiency, which triggers anemia.
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For example, by reducing the particle size in potatoes,
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this new technology improves the bioavailability of this nutritional ingredient without the tendency to cause colour and odour changes.
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In terms of packaging, nanomaterials are more economical and are used in all sorts of products, chocolate in particular.
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Nanotechnology can also enhance the flavour of food.
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On a domestic scale, we expect more smart furniture, which is made of shape memory alloys, to be manufactured.
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But nanotechnology has much wider application than this and could also help develop sustainable agriculture.
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It offers great potential to strengthen the effect of fertilizers, thereby minimizing the environmental impact and boosting the productivity of plants in the soil.
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In the area of medicine, bioengineers have developed simple and inexpensive nanoscale delivery vehicles,
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Conductors like carbon nanotubes have been invented with varying structures.
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Such nanotubes have become increasingly attractive to researchers because of their ability to efficiently deliver drugs into veins.
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This means that higher doses of drugs loaded on them can be transported from the administration sites to the effects -related sites, such as cancer focuses.
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thus decreasing toxic side effects while increasing the treatment effects.
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The research team has also developed a widely accepted material that can be used to coat different surfaces, including wood, plastic and glass.
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It is mainly comprised of silver.
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Such nanoparticles can eventually kill some microbes due to the antiseptic properties.
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The whole process is simple, easy to apply and, more importantly, harmless to the environment.
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Surprisingly, nanotechnology has major implications for our health as well.
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By changing the metabolic rate through a particular type of protein, obese patients are able to burn calories faster, even under a high calorie diet.
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Therefore, treatment programs are provided for patients to lose weight by disposing of excess fat in a relatively safer manner.
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The finding may help explain why overweight people struggle to lose weight.
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Their stored fat is actively fighting against their efforts to burn it off at the molecular level.
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Further research is mainly focused on the clinical and commercial developments of therapies for obesity,
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diabetes and other associated conditions such as heart disease.
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In terms of cosmetics, the applications of nanotechnology and nanomaterials can be found in many products.
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There are two main uses for nanotechnology in cosmetics.
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caused by the sun.
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In addition, nanotechnology has played an important role in delivering active ingredients to the skin.
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The mechanism proves to improve the bioavailability of actives and enhance skin hydration.
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The wide variety of nanotechnology applications leave no doubt that this field will only continue to get more exciting,
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and I look forward to seeing these developments further branch out.
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That is the end of part four.
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You now have one minute to check your answers to part four.
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이 클립으로 달성할 말하기 목표
이 비디오는 IELTS 스피킹 준비나 일상 영어 발표 실력 향상에 딱 맞는 연습 자료입니다. 나노기술과 같은 전문 주제를 다루는 강의 내용을 통해 복잡한 정보를 명확하게 전달하는 능력을 기르고, 논리적인 흐름을 유지하면서 말하는 fluency를 키울 수 있습니다. 특히 shadowing 연습에 적합해요—빠르게 변하는 발음과 리듬을 따라하면서 듣기와 말하기 능력을 동시에 향상시킬 수 있습니다.
반복해서 쓸 수 있는 표현 모음
- refer to ~ as: ~를 ~라고 부르다
- pose a threat to: ~에 위협이 되다
- leverage against: ~에 활용하다
- minimize the environmental impact: 환경 영향을 최소화하다
- boost the productivity: 생산성을 높이다
- decrease toxic side effects: 독성 부작용을 줄이다
- have major implications for: ~에 큰 영향을 미치다
약점을 보완하는 방법
이 비디오는 영어 발음 교정과 리듬 연습에 큰 도움이 됩니다. 강의에서 사용된 단어들 중 "nanotechnology", "bioavailability", "antiseptic"과 같은 길고 어려운 단어들이 많아요. 이런 단어들을 따라하면서 음절의 강세와 발음 위치를 익히세요. 또한, "thereby minimizing the environmental impact and boosting..."와 같은 긴 문장에서의 리듬을 주의깊게 듣고 따라해보세요. shadowspeaks나 shadow speak 방식을 사용하면 더 효과적입니다—비디오를 멈추지 않고 즉시 따라하는 연습을 반복하면 자연스러운 발화 속도와 리듬을 익힐 수 있습니다. 좋은 shadowing site를 찾아 꾸준히 연습한다면, 복잡한 주제도 자신있게 말할 수 있을 거예요! 화이팅!
쉐도잉이란? 영어 실력을 빠르게 키우는 과학적 방법
쉐도잉(Shadowing)은 원래 전문 통역사 훈련을 위해 개발된 언어 학습 기법으로, 다언어 학자인 Dr. Alexander Arguelles에 의해 대중화된 방법입니다. 핵심 원리는 간단하지만 매우 강력합니다: 원어민의 영어를 들으면서 1~2초의 짧은 지연으로 즉시 소리 내어 따라 말하는 것——마치 '그림자(shadow)'처럼 화자를 따라가는 것입니다. 문법 공부나 수동적인 청취와 달리, 쉐도잉은 뇌와 입 근육이 동시에 실시간으로 영어를 처리하고 재현하도록 훈련합니다. 연구에 따르면 이 방법은 발음 정확도, 억양, 리듬, 연음, 청취력, 말하기 유창성을 크게 향상시킵니다. IELTS 스피킹 준비와 자연스러운 영어 소통을 원하는 분들에게 특히 효과적입니다.