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...
南方的温度会上升到一百多度。The temperature in the south will soar into the hundreds.一名官员称有一百多人被捕。According to one official more than a hundred people have been arrested.两年内，他赢了一百多场。In two years, he clocked up over 100 victories....
他们冲他起哄，以激愤的问题打断他的发言。They heckled him and interrupted his address with angry questions.他针对特纳发表了一篇极端激愤的长篇演说。He launched an immoderate tirade on Turner.她的作品充满了激愤.Her work is infused with anger....
He is a morose, work-shy layabout.他是个整天垂头丧气、游手好闲的人。She was morose, pale, and reticent.她面色苍白、忧郁孤僻，并且沉默寡言。a morose expression闷闷不乐的表情She just sat there looking morose.她就那样阴郁地坐在那儿。...
管风琴发出的音量比小提琴或笛子都大.A pipe organ gives much more volume than a violin or flute.他教授钢琴、管风琴和作曲。He taught the piano, organ and composition.管风琴发出低沉的声音.A deep sound came out of the pipe organ....