单词：absorbent cellulose
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Don: Time to go again to the A Moment of Science mailbag. Yal: A listener writes: Dear A Moment of Science, Scientists know that one day we'll run out of oil and other natural sources of energy. Beyond solar power and wind power and ethanol, what are
英语时差8，16
Pre-Listening Vocabulary toll road: a road that requires drivers to pay a fee to use it shred: to break up into very small pieces pulp: soft, wet material congestion: high volume; crowdedness absorbent: holds a lot of water Tarmac: a road material ma
趣谈英语
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This'll just take a minute. It sounds like something out of a bad science fiction novel. During World War II, a fungus called Tricoderma reesei ate its way through US military unifo
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Scientists in Brazil are turning fruit fibers into car parts. At a recent meeting of the American Chemical Society, the researchers described their work in making the next generation of automotive parts made from natural fibers from bananas, pineappl
VOA标准英语2011年(四月)
Turning Cigarette Butts to Batteries 烟头转变成电池 If you see a person carelessly throw a cigarette to the ground, what are you likely to think? That depends. If you hate people throwing things on the ground, you might think, That person shou
2014年VOA慢速英语(九)月
As a whole, the ocean has absorbed almost half the CO2 humans have created in the last 200 years, drastically slowing the rate of global warming. 整体来说，在过去200多年来，人类所制造出的二氧化碳中有将近一半已经被海洋吸
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