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...
看到乔治假慈悲，我感到恶心。The sight of George shedding crocodile tears made me sick.她从他们的脸上看不到慈悲。She saw no pity in their faces.他们要她对犯人慈悲为怀。They asked her to be merciful to the prisoners....