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By Derek Kilner Nairobi 22 November 2007 Somalia's president has announced the nomination of a new prime minister for the country's embattled transitional government. As Derek Kilner reports from VOA's East Africa bureau in Nairobi, the new prime min
发表于:2019-01-11 / 阅读(86) / 评论(0)
VOA常速英语2007年(十一月)
演讲简介:要阻止撒哈拉南部非洲各国的疾病流行,仅靠药品是不够的。我们还需要与之配套的诊断工具。TED资深会员Frederick Balagadde向我们展示如何通过微型化技术把笨重昂贵的化验室集成至
发表于:2019-02-21 / 阅读(134) / 评论(0)
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