单词：RF linear accelerator
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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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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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By Mona Ghuneim New York 24 October 2007 The United Nations Special Envoy to Darfur says some Sudanese rebels have declined to take part in the upcoming peace talks and it is still uncertain who will participate. The talks with the Sudanese governmen
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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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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
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