Serpentine often contains some asbestos , and should be used with caution .因为蛇纹石往往包含了一些石棉，收集时应谨慎。...serpentine woodland pathways.蜿蜒的林间小路The method is presented for preparation metasilicate pentahydrate from residue after...
De Gaulle vetoed Britain's application to join the EEC.戴高乐驳回了英国加入欧洲经济共同体的申请。The president vetoed the bill, and the Senate failed by a single vote to override his veto.总统否决了该议案，而参议院以一票之差未能推翻他的否决。The suggestion went t...