SSS 2009-04-06

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(78) / 评论(0)

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与美国小学生一起学英文第5册第8期:力

Force 力 A force is a push or a pull. 力是指推力或拉力。 Force gives an object the energy to move, stop moving or change direction. 力给予物体移动、不移动或改变方向的能量。 Here are some good examples of force. 这里有几

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与美国小学生一起学英文第5册

VOA慢速英语2010年-Economics Report_ A Rough Road for Toy

This is the VOA Special English Economics Report. Toyota became the world's largest automaker in two thousand eight. But after years of building loyalty, the Japanese company may have put its quality brand name at risk, at least temporarily. Toyota i

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Yes, There is

My wife came home yesterday and said, Honey, the car won't start, but I know what the problem is.I asked her what it was, and she told me there was water in the carburetor(化油器）. I thought for a moment, then said, You know, I don't mean this o

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趣味英语

X-ray

A young girl was told she needed an X-ray. She went in and seemed especially nervous. When she came out of the X-ray room, she told her mother, They took a picture of my bones.Yes, dear, replied the mother. Did everything go all right?Sure, said the

发表于:2019-02-07 / 阅读(83) / 评论(0)

趣味英语

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Last week while driving with her one-year old son 今天的第一位嘉宾上周带着 our first guest experienced the most frightening event of her life. 她一岁的儿子开车时经历了平生最可怕的事 Thankfully a hero appeared on the b

发表于:2019-02-15 / 阅读(47) / 评论(0)

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additional necessary condition

adjusting screw lock nut

admission degree

aeolian

air refueling control team