单词：depolarizing cathode
去极化阴极
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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
发表于:2019-01-08 / 阅读(252) / 评论(0)
Scientific American(四)月
Scientific American(四)月
A: Hello, maam, can I help you find something? B: Yes, actually Im looking to buy a camera. A:Weve got a wide selection do you know if youd like a point-and-shoot, or something a little fancier? Are you shopping for yourself or for someone else? B: A
发表于:2019-01-20 / 阅读(168) / 评论(0)
纯正地道美语
纯正地道美语