单词：reinoculating
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By Nico Colombant Dakar 31 July 2006 In West Africa's Sahel region, which has had poor rain over the past few decades, scientists and human rights activists are hard at work trying to combat some of the many negative effects of desertification - the
发表于:2018-12-08 / 阅读(132) / 评论(0)
2006年VOA标准英语（七月）
2006年VOA标准英语（七月）
Be an Optimist（做一个乐观的人） Do you see the glass as half－full rather than half empty? Do you keep your eye upon the doughnut，not upon the hole? Suddenly these clichs are scientific questions，as researchers scrutinize the power of
发表于:2019-02-04 / 阅读(83) / 评论(0)
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