单词：cathode lug
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格列佛游记.Gulliver's.Travels
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This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a
Scientific American(四)月
A new report predicts developing Asia's economic growth will slow by almost half this year, but the Asian Development Bank forecasts that the region will rebound in 2010. Developing Asian economies are likely to grow by an average of 3.4 percent in
VOA标准英语2009年(四月)