the serpentine course of the river蜿蜒曲折的河道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。One part of the Serpentine is kept for swimmers.蜿蜒河的一段划为游泳区....
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...
By freezing chitosan - gelatin complex induced phasic abruption, the porous and ventilative sponge of chitosan - gelatin was made.通过冷冻壳聚糖 - 明胶共混液诱导相分离的方法,可以制成多孔性、亲水性 、 透气性良好的海绵状伤口敷料.Pull rod is the main bearing part of c...
他描述了被俘4个月里挣扎求生的艰难岁月。He described the difficulties of surviving for four months as a captive.他根据被俘囚犯提供的证据得出了这个结论。He based his conclusions on the evidence given by the captured prisoners.他于1942年在北非被俘。He was taken prisoner ...
Avout 7 million people, including current president Thabo Mbeki and former president Nelson Mandela, speak Xhosa.大约有700万人, 包括现任的总统塔博·姆贝基和前任总统纳尔逊·曼德拉都说科萨语.Zulu and Xhosa version will be available soon and other languages ...