Prática de Shadowing: The world is poorly designed. But copying nature helps. - Aprenda a falar inglês com vídeo
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In 1989, Japan's Shinkansen bullet train had a problem.
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It was fast, really fast, like pushing 170 miles per hour fast.
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But every time it exited a tunnel, it was loud.
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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.
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The air exited tunnels with a sonic boom that could be heard 400 meters away.
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In dense residential areas, that was a huge problem.
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So an engineering team was brought in to design a quieter, faster, and more efficient train.
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And they had one secret weapon.
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Eiji Nakatsu, the general manager of the technical development department, was a bird watcher.
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Different components of the redesigned bullet train were based on different birds.
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owls inspired the pantograph that's the rig that connects the train to the electric wires above
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nakatsu modeled the redesign after their feathers reducing noise by using the same serrations and curvature
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that allow them to silently swoop down to catch prey the adeli penguin whose smooth body allows it to swim
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and slide effortlessly inspired the pantograph supporting shaft redesigned for lower wind resistance.
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And perhaps most notable of all was the kingfisher.
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The kingfisher is a bird that dives into water to catch its prey.
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The unique shape of its beak allows it to do that while barely making a splash.
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Nakatsu took that shape to the design table.
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The team shot bullets shaped like different train -nose models down a pipe to measure pressure waves
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and dropped them into water to measure the splash size.
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The quietest nose design was the one modeled most closely after the Kingfisher's beak.
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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.
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And it did all that with the wings of an owl, the belly of a penguin, and the nose of a Kingfisher.
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There's a name for design like this.
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It's called biomimicry.
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The people who design our world usually never take a biology class, believe it or not.
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So they're novices in how the world works.
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That's Janine Benyus.
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Back in 1997, she wrote the book that coined the term biomimicry.
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It told the story of the innovations in computing, energy, and health that were inspired by structures in the natural world.
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Stick like a gecko, compute like a cell, even run a business like a redwood forest.
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Benyus has since worked as a consultant for various companies, trying to get them to understand how to take design ideas from nature.
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That might mean studying prairie dog burrows to build better air ventilation systems, mimicking shark skin to create bacteria -resistant plastic surfaces for hospitals,
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or arranging wind turbines in the same drag -reducing pattern that schools of fish swim in.
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Designers get inspiration from a lot of different places, but Benyus thinks many of them could benefit from looking more at the natural world.
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So there's a lot of sort of looking at what other people have done
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and what they do is they look at all the others and they get ideas.
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They literally do, you know, a lot of designers have lots of magazines that they look through.
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They They tear those out and they put them on inspiration boards.
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But they're looking at other human technologies.
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Her idea was simple.
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Designers should get in the habit of bringing a biologist to the table and let them help solve problems by mimicking nature.
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And there are three main ways they can do that.
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You know, you can mimic its form or its shape.
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You might create a paint for a building that when it dries, it's got the same structure as self -cleaning leaves.
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Lotus leaves are notoriously great.
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They let rainwater clean the leaf because they have these bumps.
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The rainwater balls up on the bumps and then it pearls away the dirt.
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So that lotus effect is physical.
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And you can create a physical structure on the outside of any product.
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Imagine that on the outside of your car.
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Rainwater would clean your car.
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So that's mimicking form.
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But there's also a mimicking process the processes in the natural
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world it might even be you know how you mimic how
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ants communicate in order to efficiently find sources of food
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or new new places to live and those processes
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that self -organization has been mimicked in software you know in things like all you know autonomous cars
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and how they're gonna move in flocks through the city by talking to one another that's mimicking nature's process
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and then you jump up
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to the level of mimicking whole ecosystems right there's a thing
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called that's a buzzword right now that's really hot called the circular economy
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which is essentially you know industry saying you know there are
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there's no there should be no such thing as a byproduct in our manufacturing facility
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that goes to landfill it should be used by something else right
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and at the end of a product's life
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that product should be upcycled into something else it's being called the circular economy ecosystems do
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that really really really well you've got a log on the forest floor
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and those materials move up into the body of the fungus that eats it those materials move up into a
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mouse and that mouse material moves up into a hawk right
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and if you think about
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that is what we'd like to do with local materials being
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upcycled constantly in our cities for instance those These ecosystem lessons are really big for us.
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And that's the end goal for biomimetic design, making products, systems, and cities functionally indistinguishable from the natural world.
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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.
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The people who design our world have a lot to learn from the natural world.
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All they have to do is take a look.
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Thank you so much for watching.
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This is one of a series of videos that we're doing in collaboration with 99 % Invisible.
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They are a podcast that does stories all about design.
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We loved working with them.
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You should definitely check them out at 99pi .org or on any podcast app.
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Objetivos de fala para este clipe
Este vídeo é perfeito para quem quer melhorar a fluência ao falar de temas técnicos e inovadores, além de praticar a articulação em frases longas com termos específicos. Ideal para o shadowing em inglês, pois combina narrativa contínua com explicações claras, ajudando a sincronizar voz e ouvido.
Banco de frases reutilizáveis
- "The noise was coming from a variety of sources" (O ruído vinha de várias fontes)
- "There's a name for design like this" (Há um nome para um design como esse)
- "Designers get inspiration from a lot of different places" (Designers obtêm inspiração de muitos lugares diferentes)
- "It's being called the circular economy" (Está sendo chamado de economia circular)
Essas frases são ótimas para o shadow speech, pois usam estruturas comuns em conversas sobre ciência e inovação.
Corrija seus pontos fracos
O vídeo ajuda a melhorar a ritmada da fala, especialmente em passagens com termos complexos (como "biomimicry" ou "pantograph"). Praticar o shadowing aqui treina a capacidade de manter o fluxo ao pronunciar palavras longas e conectar ideias. Além disso, a variedade de tópicos (engenharia, biologia, economia) expõe o ouvinte a contextos reais, essenciais para aprender inglês com vídeos. Use um shadowing site para repetir as falas em tempo real e comparar sua pronúncia com a do narrador.
Gramática neste vídeo
As estruturas que o falante mais usa, com as palavras exatas do vídeo:
| Estrutura | No vídeo |
|---|---|
| Voz passiva be + particípio passado — o foco está no que acontece, não em quem faz | could be heard · was brought · were based |
| Present perfect have/has + particípio passado — uma ação passada que ainda importa agora | have done · has been mimicked · has been |
| Orações relativas who / which + oração — informação extra sobre uma pessoa ou coisa | people who design |
O que é a Técnica de Shadowing?
Shadowing é uma técnica de aprendizado de idiomas com base científica, originalmente desenvolvida para o treinamento de intérpretes profissionais. O método é simples, mas poderoso: você ouve áudio em inglês nativo e repete imediatamente em voz alta — como uma sombra seguindo o falante com 1-2 segundos de atraso. Pesquisas mostram melhora significativa na precisão da pronúncia, entonação, ritmo, sons conectados, compreensão auditiva e fluência na fala.