シャドーイング練習: The world is poorly designed. But copying nature helps. - 動画で英語スピーキングを学ぶ

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In 1989, Japan's Shinkansen bullet train had a problem.

It was fast, really fast, like pushing 170 miles per hour fast.

But every time it exited a tunnel, it was loud.

The noise was coming from a variety of sources, but whenever a train sped into a tunnel, it pushed waves of atmospheric pressure through the other end.

The air exited tunnels with a sonic boom that could be heard 400 meters away.

In dense residential areas, that was a huge problem.

So an engineering team was brought in to design a quieter, faster, and more efficient train.

And they had one secret weapon.

Eiji Nakatsu, the general manager of the technical development department, was a bird watcher.

Different components of the redesigned bullet train were based on different birds.

owls inspired the pantograph that's the rig that connects the train to the electric wires above

nakatsu modeled the redesign after their feathers reducing noise by using the same serrations and curvature

that allow them to silently swoop down to catch prey the adeli penguin whose smooth body allows it to swim

and slide effortlessly inspired the pantograph supporting shaft redesigned for lower wind resistance.

And perhaps most notable of all was the kingfisher.

The kingfisher is a bird that dives into water to catch its prey.

The unique shape of its beak allows it to do that while barely making a splash.

Nakatsu took that shape to the design table.

The team shot bullets shaped like different train -nose models down a pipe to measure pressure waves

and dropped them into water to measure the splash size.

The quietest nose design was the one modeled most closely after the Kingfisher's beak.

When the redesign debuted in 1997, it was 10 % faster, used 15 % less electricity, and stayed under the 70 decibel noise limit in residential areas.

And it did all that with the wings of an owl, the belly of a penguin, and the nose of a Kingfisher.

There's a name for design like this.

It's called biomimicry.

The people who design our world usually never take a biology class, believe it or not.

So they're novices in how the world works.

That's Janine Benyus.

Back in 1997, she wrote the book that coined the term biomimicry.

It told the story of the innovations in computing, energy, and health that were inspired by structures in the natural world.

Stick like a gecko, compute like a cell, even run a business like a redwood forest.

Benyus has since worked as a consultant for various companies, trying to get them to understand how to take design ideas from nature.

That might mean studying prairie dog burrows to build better air ventilation systems, mimicking shark skin to create bacteria -resistant plastic surfaces for hospitals,

or arranging wind turbines in the same drag -reducing pattern that schools of fish swim in.

Designers get inspiration from a lot of different places, but Benyus thinks many of them could benefit from looking more at the natural world.

So there's a lot of sort of looking at what other people have done

and what they do is they look at all the others and they get ideas.

They literally do, you know, a lot of designers have lots of magazines that they look through.

They They tear those out and they put them on inspiration boards.

But they're looking at other human technologies.

Her idea was simple.

Designers should get in the habit of bringing a biologist to the table and let them help solve problems by mimicking nature.

And there are three main ways they can do that.

You know, you can mimic its form or its shape.

You might create a paint for a building that when it dries, it's got the same structure as self -cleaning leaves.

Lotus leaves are notoriously great.

They let rainwater clean the leaf because they have these bumps.

The rainwater balls up on the bumps and then it pearls away the dirt.

So that lotus effect is physical.

And you can create a physical structure on the outside of any product.

Imagine that on the outside of your car.

Rainwater would clean your car.

So that's mimicking form.

But there's also a mimicking process the processes in the natural

world it might even be you know how you mimic how

ants communicate in order to efficiently find sources of food

or new new places to live and those processes

that self -organization has been mimicked in software you know in things like all you know autonomous cars

and how they're gonna move in flocks through the city by talking to one another that's mimicking nature's process

and then you jump up

to the level of mimicking whole ecosystems right there's a thing

called that's a buzzword right now that's really hot called the circular economy

which is essentially you know industry saying you know there are

there's no there should be no such thing as a byproduct in our manufacturing facility

that goes to landfill it should be used by something else right

and at the end of a product's life

that product should be upcycled into something else it's being called the circular economy ecosystems do

that really really really well you've got a log on the forest floor

and those materials move up into the body of the fungus that eats it those materials move up into a

mouse and that mouse material moves up into a hawk right

and if you think about

that is what we'd like to do with local materials being

upcycled constantly in our cities for instance those These ecosystem lessons are really big for us.

And that's the end goal for biomimetic design, making products, systems, and cities functionally indistinguishable from the natural world.

Life has been around on Earth for 3 .8 billion years, and what designers are starting to realize is that that is a lot of research and development time.

The people who design our world have a lot to learn from the natural world.

All they have to do is take a look.

Thank you so much for watching.

This is one of a series of videos that we're doing in collaboration with 99 % Invisible.

They are a podcast that does stories all about design.

We loved working with them.

You should definitely check them out at 99pi .org or on any podcast app.

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この動画が英語学習に最適な理由

「動画で英語学習」をするなら、このクリップはまさに理想的な教材です。自然なスピーチのリズムや、専門用語と日常語のバランスが完璧で、IELTS スピーキング対策にもぴったりです。しかも、生物模倣（バイオミミクリー）という興味深いトピックが絡んでいるので、学ぶモチベーションも続きます。話す内容に意味があるからこそ、発音やイントネーションを楽しく練習できるのです。

自然な英語表現を分解してみよう

この動画の台詞には、自然な英語の秘密が詰まっています。例えば、「The quietest nose design was the one modeled most closely after the Kingfisher's beak.」という文は、「～に最も近くモデル化された」という表現がスムーズで、日常会話や説明でよく使われます。また、「Designers get inspiration from a lot of different places, but Benyus thinks many of them could benefit from looking more at the natural world.」では、「benefit from～」（～から恩恵を受ける）というフレーズが自然に入っていて、単語の使い方が勉強になります。もう一つ、「It should be used by something else, and at the end of a product's life, that product should be upcycled into something else.」は、「at the end of a product's life」（製品の寿命が尽きた時）という比喩的な表現が印象的で、話を生き生きとさせます。これらの文は、文法的に正しいだけでなく、ネイティブが実際に使うリズムやイントネーションが含まれているので、shadow speechの練習に最適です。

効果的な練習ルーティン：shadow speakで上達を目指そう

「英語の発音を良くする」ための簡単なルーティンを紹介します。まず、動画を10秒ほど再生して止め、その直後に同じ内容を真似て話します（shadow speak）。この時、発音だけでなく、イントネーションやポーズも完璧にコピーしましょう。録音機能を使って自分の声を録り、ネイティブの発音と比べてみると、違いがはっきりわかります。1日10分、これを続けるだけで、スピーキングの流れが自然になり、IELTSのような試験でも自信を持って話せるようになります。特に、「biomimicry」のような専門用語の発音も、繰り返し練習することで完璧にマスターできます。

この動画を使った練習は、単なる英語学習ではなく、新しい考え方を学びながらスキルアップできるので、一石二鳥です。今すぐ始めて、自然な英語を身につけましょう！

この動画の文法

話し手がよく使っている文型を、動画の実際の表現とともに紹介します。

文型	動画での表現
受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる	could be heard · was brought · were based
現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している	have done · has been mimicked · has been
関係詞節 who / which + 節 — 人や物について情報を加える	people who design

シャドーイングとは？英語上達に効果的な理由

シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。

シャドーイングのやり方: ステップ別の完全ガイドを読む →

シャドーイング練習: The world is poorly designed. But copying nature helps. - 動画で英語スピーキングを学ぶ

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この動画が英語学習に最適な理由

自然な英語表現を分解してみよう

効果的な練習ルーティン：shadow speakで上達を目指そう

この動画の文法

シャドーイングとは？英語上達に効果的な理由