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科学美国人60秒 SSS Forest Die-Offs Alter Global Climate 'Like El Nino'

Climate change may be partly to blame for the massive die-off of pine trees in the western U.S. But it works the other way, too: forest die-offs can alter the global climate. I like thinking of this as a parallel to something like El Nino. Abigail Sw

发表于:2018-12-24 / 阅读(66) / 评论(0) 分类 2016年Scientific American(十一)月

2007年VOA标准英语-Guinea's Defense Minister Tries to Bring Soldie

By Nico Colombant Dakar 06 June 2007 Guinea's new defense minister is touring barracks across the West African nation for a second time since his appointment. He was named last month to help quell unrest caused by disgruntled soldiers. VOA's Nico Col

发表于:2019-02-04 / 阅读(117) / 评论(0) 分类 2007年VOA标准英语（六月）
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