Spiiker新聞萬花筒，VOA新聞，帶您看世界，聽世界，

感受世界的點點滴滴。

練聽力，提能力，小編與您共努力！

Researchers Create Artificial Skin With Sense of Touch

Scientists have recently made considerable gains in creating human-like artificial limbs, but they still look and feel artificial. That could change with a development from South Korea. Researchers say they have come up with a synthetic skin that not only feels warm but also has the sense of touch and moisture.

Artificial robotic hands are getting increasingly better at emulating human hands and the most advanced can even be controlled by thoughts.

But people who wear bionic hands must rely on their sight to know what they are touching or grasping.

Now, though, researchers in South Korea and the U.S. say they have created a stretchable artificial skin that can register heat, pressure and moisture.

This polymer-based elastic material is not designed to replace damaged human skin, such as in burn victims, but rather to provide high-resolution sensory capabilities for prosthetic limbs or for the limbs of humanoid robots.

Team leader Kim Dae-Hyeong, a professor at the Seoul National University School of Chemical and Biological Engineering, says its sensors are an exact copy of human skin.

“The skin can feel pressure, temperature, strain, humidity," said Kim. "Also it is soft, just like human skin, and embedded with heating elements that can make itself warm.”

Kim says the artificial skin is made of a combination of rubber, polyamide and silicon with sensor density of up to 400 per square millimeter.

An artificial hand wrapped in the new skin could distinguish between dry and moist objects and measure the pressure of the grasp.

But Kim says what it still can not do is send those signals to a human brain. That, he says, is the scientists’ ultimate goal.

“I hope a robotic limb with this synthetic skin can be used by disabled people. For industrial uses, it can be applied to various types of robots, like a humanoid robot," said Kim.

Scientists say with this sensitive skin, robots may someday be able to type on keyboards and even change a baby’s wet diaper.

詞匯解析

entertain

難度：3星常用詞匯，屬常用6000詞

英漢解釋

v.娛樂；使有興趣；招待；考慮；抱有；容納

參考例句

用作動詞 (v.)

We were all entertained by his humorous stories.

他的幽默故事使我們大家都很開心。

The human soul is hospitable, and will entertain conflicting sentiments and contradictory opinions with much impartiality.

人類的靈魂是能夠容納一切的，它毫不偏袒地接受互相對立的感情和互相矛盾的意見。

************************

delicate

難度：3星常用詞匯，屬常用6000詞

英漢解釋

adj.微妙的；精美的；纖細的；脆弱的；敏銳的；美味的

參考例句

用作形容詞 (adj.)

The scientist needs some delicate instruments.

這位科學(xué)家需要一些精密的儀器。

They are the most delicate morsels.

這些確是最好吃的部分。

************************

react

難度：3星常用詞匯，屬常用6000詞

英漢解釋

v.反應(yīng)；反攻

參考例句

用作動詞 (v.)

The British would never react militarily to the invasion of the islands.

英國根本不會在他們侵占福島后在軍事上進行反攻。

The Glade Riders and Warhawk Riders are swift and skilful beastmasters, striking with speed before the foe can react.

森林騎兵和戰(zhàn)鷹騎士都能靈巧地駕馭他們的坐騎，從而能迅速地攻擊敵人，致使其不能反攻。

************************

deputy

難度：2星擴展詞匯，屬常用10000詞

英漢解釋

n.代表；副手；議員

參考例句

用作名詞 (n.)

My younger brother is my deputy during my absence.

我不在時，我弟弟代表我。

************************

liberal

難度：4星核心詞匯，屬常用3000詞

英漢解釋

adj.慷慨的；大方的；開明的；自由主義的

n.自由主義者；開明的人

參考例句

用作形容詞 (adj.)

They are liberal in their help.

他們慷慨相助。

用作名詞 (n.)

He is an open-minded liberal.

他是一個開明的自由主義者。

************************

crisis

難度：4星核心詞匯，屬常用3000詞

英漢解釋

n.危機；危急關(guān)頭

參考例句

用作名詞 (n.)

They suffered huge losses in the financial crisis.

他們在經(jīng)濟危機時遭受了巨大的損失。

************************

reader

難度：4星核心詞匯，屬常用3000詞

英漢解釋

n.讀者；讀物；讀本

參考例句

用作名詞 (n.)

He writes with the reader in mind.

他寫作時把讀者放在心上。

************************

credit

難度：3星常用詞匯，屬常用6000詞

英漢解釋

n.信用；榮譽；學(xué)分；贊揚；貸款；賒欠；貸方；存款

(復(fù))credits: 演職員名單.

v.歸功于；相信；記入貸方

參考例句

用作名詞 (n.)

Credit counseling helped us get out from under.

信用咨詢使我們免除了憂慮

用作動詞 (v.)

At the time, we used to credit everything to one person.

那時大家把什么都歸功于一個人。

See more information, you can visit us

英語口語測試  http://www.demadzwfz.com/daily/
 
在線學(xué)英語口語 http://www.demadzwfz.com/english-plaza.jsp