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By David McAlary Washington 02 June 2006 The two U.S. and Russian International Space Station crewmen stepped outside the outpost for a spacewalk to perform maintenance chores as the U.S. space agency
2006年VOA标准英语（六月）
This is Scientific American's 60-second Science, I'm Steve Mirsky. Got a minute? Back on January 15th, US Airways Flight 1549 made that amazing water landing in the Hudson after both engines were taken out by Canada geese, which can weigh eight pound
Scientific American(六)月
By Phuong Tran Dakar 16 March 2007 In some African countries when a woman's husband dies, it is common for her to marry one of his brothers. For many families, this ensures someone will take care of the widow and her children, and that she remains p
2007年VOA标准英语（三月）
By Michael Bowman Washington 06 July 2006 After a successful docking, the crews of the Space Shuttle Discovery and the International Space Station are working side-by-side some 350 kilometers above the Earth. ----------- German astronaut Thomas Reit
2006年VOA标准英语（七月）
The top drug control official in the U.S., Gil Kerlikowske, is speaking out against increasing drug violence in Mexico and in support of Mexican President Felipe Calderon. In the most recent violence, 21 people died Thursday in a gun battle between r
VOA标准英语2010年(七)月