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...
I suppose all honeymoons are more or less alike.我想所有的蜜月多多少少都是相似的.Honeymoons are stupid things.蜜月是乏味的事情.The couple can receive discounts on hiring cars, gowns, honeymoons and wedding banquets with the coupons.新人凭券可在租婚车 、 ...
马丁对于这一悖论的解释尽管严格说来不合乎逻辑, 卻似乎是最好的解释了.Although strictly illogical, Martin's interpretation of this paradox seems the best.这个故事存在多重悖论。The story contains many levels of paradox.矛盾和悖论越来越多.Contradictions and paradoxes aros...
卡斯帕对欧洲农业状况发表了一番颇有见地的见解。Kaspar had spoken know-ledgeably about the state of agriculture in Europe.传统的刀耕火种农业方式耗尽了土地的肥力。Traditional slash and burn farming methods have exhausted the soil.乌克兰的工业和农业都很发达。The Ukraine is strong ...