单词:haiweeite
n. 多硅钙铀矿
[网络] 水硅钙铀矿;多矽钙铀矿
[网络] 水硅钙铀矿;多矽钙铀矿
单词:haiweeite 相关文章
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Wee Sing Games
By Cathy Majtenyi Nairobi, Kenya 06 December 2007 Kenya's capital, Nairobi, is home to one of Africa's largest dumpsites. A recent United Nations study found that nearly half of the children surveyed who live near the dumpsite suffer from serious med
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VOA常速英语2007年(十二月)