单词：alternative stroking test apparatus
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How and Why We Sleep? It's apparent that everyone needs to sleep.However,most people vary think about how and why they sleep.We know that if we sleep well,we felt rested.If we don't sleep enough,we often felt tired and irritable.It seems there are tw
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This is Scientific Americans' 60-Second Science. Im Steve Mirsky. Got a minute? The search for alternative fuels to gasoline has led to surprising possibilities, for instance, the waste oil for making French fries. But one of the most unusual alterna
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'Test Tube Burger Provides Meatless Alternative Paying $330,000 for a hamburger might seem like a lot, but that's what it cost for scientists in the Netherlands to prove it's possible to make a meat-like pattie from a cluster of muscle cells. At the
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By Jerilyn Watson Broadcast: July 17, 2003 This is Bill White with the VOA Special English Education Report. Some young people in the United States attend 1)alternative schools. These are schools that
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By Shally Zomorodi Los Angeles, California 17 November 2006 watch Roads To You Concert Roads to You musicians on tour Musicians from all over the world are putting their differences aside to spread a message of peace to audiences in the Middle East,
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