某种蟑螂喷射一种催泪性毒气――乙 基丙烯 醛.A species of cockroach sprays a substance , ethylacrolein, that is a kind of tear gas.即丙烯醛水合法, 环氧乙烷甲酰化法,生物发酵法.They are acrylaldehyde hydration, ethylene oxide formylation and biological zymolysis m...
The children leaded toward school, carrying slates and followed by their dogs.孩子们带着石板向学校走去, 小狗跟在后面.Japanese refiners stopped producing leaded petrol in December 1987.日本的炼油厂于1987年12月停止生产含铅汽油。One of the first things we did...
The whole area was ravaged by forest fires.森林火灾使整个地区荒废了.The forest was ravaged by fire.那片森林被大火毁了.The countryside has been ravaged by pollution.乡村受到污染的破坏....
他过来抱怨音乐的音量太高了。He came to complain about the volume of the music.有人调大了公共广播系统的音量。Someone cranked up the volume of the public address system.他把收音机的音量开得很大，好让自己不再想这件事。He put the radio on loud to stop himself thinking about it...