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最新研制一种新的医疗设备，可以利用身体动作来充电。 Novel materials could allow the implantation of flexible, rechargeable batteries that would constantly recharge from the body's own movements--even just breathing. Cynthia Gr

SSS 2008-02-22

This is Scientific American's 60-Second Science. I'm Karen Hopkin, this'll just take a minute. On February 8th, we told you about scientists who had created a device worn over the knees that could harvest the energy you otherwise waste while walking.

SSS 2011-04-20

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Are your car bumpers riddled with scars from encounters with tight parking spaces? Did the furniture movers scratch your floor? Wouldn't it be great if t

SSS 2011-07-21

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. After water, tea is the world's most popular drink. Now three New York City high school students have discovered what maybe a bruing scandal because th

SSS 2010-03-26

This is Scientific American's 60-Second Science. Im Cynthia Graber. This will just take a minute. Buildings consume about a third of the energy and two-thirds of the electricity in the U.S. Roofs are a good place to try to cut those figures. Because

SSS 2010-09-24

This is Scientific Americans 60 Science, Im Cynthia Graber. Thisll just take a minute. Batteries add weight, and they need recharging. Thats serious business for implanted medical devices. When the batteries die, patients sometimes have to undergo an

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可以录音和发声的衣服(有声)

M.I.T. researchers have developed a piezoelectric fiber that would react to electric currents and have the potential to record or produce audio. Clothing is so yesterday. I mean, really, what can it do? It cant pick up sound, or beep at us if somethi

在受到批评后250年可能重回AP世界史课程

250 Years Might Return to AP World History Course After Criticism The College Board has answered criticism about proposed changes to the Advanced Placement World History exam. Educators and others had objected to its plans to make the exam cover hist

SSS 2008-09-01

This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?. [Spray sound.] Killing bugs? No. [Spray sound.] Deodorizing the bathroom? No. [Spray sound.] Checking for explosives, yes. Because chemists at the University of Califor

SSS 2011-04-06

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Solar cells convert sunlight to electricity. But they don't take advantage of all that solar heat, thereby missing out on the majority of the solar ene

VOA慢速英语2014 烟头转变成电池

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VOA慢速英语2014 高新技术材料给建筑降温,将热量送入太空

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VOA常速英语2015--土坯房引领美国新墨西哥文化

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And the dominant kind of snobbery that exists nowadays is job snobbery. 今天，最主要的势利就是对职业的势利。 You encounter it within minutes at a party, 你在派对中不用一分钟就能体会到， when you get asked that famous

英语新闻视频：马来西亚巧克力糖果乐园 陪孩子们过假期

Malaysia holds chocolate exhibition Chocolate and candy, enough to satisfy any sweet tooth, are on show at Malaysia Genting Highlands. This comes just in time for the two-week holidays of the countrys primary and secondary schools. More than 1,000 va

充电几秒钟通话一星期 美大学研发超级电容电池

Scientists from the University of Central Florida (UCF) have created a supercapacitor battery prototype that works like new even after being recharged 30,000 times. 来自中佛罗里达大学（UCF）的科学家已经创造了一个超级电容电池

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(1)A: We can offer you this in different levels of quality. B: Is there much of a difference in price ? A: Yes ,the economy model is about 30% less. B: Well take that one . A:这产品我们有三种不同等级的品质。 B:价钱也有很大的分别