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By Laurel Bowman Washington 22 October 2009 As jobs disappear across the United States, advocates of solar energy say their industry can employ hundreds of thousands. But analysts say that to establish a hold on the world market, the U.S. must catch
发表于:2019-01-14 / 阅读(99) / 评论(0)
VOA标准英语2009年(十月)
VOA标准英语2009年(十月)