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By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca
[scene: the four guys play the chess invented by themselves] chess: 国际象棋 invent: 发明 -Rajesh: Knight to queen's bishop-five. Knight: 骑士【国际象棋棋子】 Queen: 女皇【国际象棋棋子】 bishop: 主教【国际象棋棋子,这
By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti
China's Defense Ministry has asked the US to stop conducting reconnaissance activities close to China to prevent hazardous incidents. Spokesperson Yang Yujun was responding to US claims that two Chinese jet fighters last week unsafely intercepted one
今天我们要学的词是 reconnaissance. Reconnaissance 名词,意思是侦察。U.S. military officials say the American forces ambushed in Niger were on a reconnaissance patrol. 美国军方官员说,在尼日尔遭遇伏击的美军当时正在