标签：Basin 相关文章

VOA标准英语2011--River Basins Could Help Ensure Food Secu

River Basins Could Help Ensure Food Security The worlds major river basins may hold the key to doubling food production in the coming years. The idea was discussed at the 14th World Water Congress in Brazil. A new report says while water shortages do

发表于:2018-12-16 / 阅读(54) / 评论(0) 分类 VOA标准英语2011年(十月)

英语听力：自然百科 金星和水星旅行指南 Venus and Mercury-6

After Messenger's 3 fly-bys, we've now mapped more than 90% of the planet. Taken from around 124 miles, these images are the clearest to date of Mercury. And it's not hard to spot a crater of epic proportions, the result of yet another Titanic collis

发表于:2019-02-05 / 阅读(66) / 评论(0) 分类 自然百科2012年

VOA标准英语2009年-Experts Look For Ways to Save Lake Chad

By Sabina Castelfranco Rome 16 October 2009 Fisherman rows canoe on Lake Chad (Nov 2006 file photo) The Food and Agriculture Organization held a special event Friday to raise awareness and mobilize funds to save Lake Chad, which was once one of the

发表于:2019-02-12 / 阅读(47) / 评论(0) 分类 VOA标准英语2009年(十月)
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