单词:calcium monosulpho aluminate
[无化] 低硫型铝酸钙
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By Mike O'Sullivan San Diego 25 October 2007 Wildfires have driven more than half a million people from their homes in California, and destroyed over 1,500 homes and businesses. Mike O'Sullivan reports from San Diego, California, some evacuees have f
发表于:2019-01-31 / 阅读(29) / 评论(0)
2007年VOA常速英语(十月)