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...
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....
The Encyclopedia is packed with clear illustrations and over 250 recipes.那本百科全书有很多清晰的插图和250多个食谱。We produce our own hair-care products, all based on herbal recipes.我们自己生产护发产品,全部采用草本配方.Many of these recipes are highly flav...
They believed ancient Greece and Rome were vital sources of learning.他们认为古代希腊罗马是知识的重要发源地。They are both very vital people and a good match.他俩都很有活力，十分般配。These projects will provide vital links between companies and univers...