Many PAHs are carcinogenic or are suspected to be carcinogenic.其主要来源于煤的不完全燃烧,也有相当部分来源于汽车尾气的排放.The both carcinogenic factors were investigated on its dose - response ralationships.研究上述两种致癌因子的剂量 - 效应相关模式.Some industrial ch...
他表现得过于亲热，媚态毕现。He had behaved with undue and oily familiarity.她那腼腆的温文神情和受惊的眼神里有一种媚态.There was something of the fawn in her grace and startled eyes.她缺少那种难以形容的软弱的媚态.She lacks the indefinable charm of weakness....
Scarlett dropped Prissy's arm and the wench sank whimpering to the steps.思嘉放开百里茜的胳臂,这女孩便呜呜咽咽地在楼梯上坐下了.Now, the sight of so many buildings and people completed Prissy's demoralization.此刻, 这么多的建筑物和人进一步把她迷惑住了.Priss...
The book designer will have to redo the masterpieces layouts.图书设计者将不得不重做这部名著的版面设计.It overcomes the shortcomings of other algorithms and can find better layouts.它克服了其它排放算法对某些排样图不能给出排列的缺点,同时排放效果好.The book designer will hav...
He had a magnificent head of silvered hair.他有一头闪亮的银发。These results do not conform to those of the'silvered vessel test ".上述试验结果与 “ 银瓶试验 ” 的结果相异.Age has silvered his hair.年老使他的头发变白....
你不用跟他磨牙.Don't waste your time arguing with him.如果你知道自己在磨牙，尤其是在夜间，你应该去看看牙医。If you know you're grinding your teeth, particularly at night, see your dentist.如果你知道自己在夜间磨牙，你应该去看看牙医。If you know you're grinding y...