胺能参加与卤代烷的亲核取代反应.Amines can engage in nucleophile substitution reaction with alky.这个反应称为Hofman消除反应, 它很像卤代烷的脱卤化氢反应.This reaction, called the Hofman elimination, is quite analogous to the dehydrohalogenation of an alkyl hal...
Betoken : To be or give a sign or portent of.预示: 做或给出记号或预兆.He gave her a gift to betoken his gratitude.他送她一件礼物表示感谢.Dark clouds betoken a storm.乌云予示着暴风雨的来临.Those black clouds betoken rain.那些乌云预示有雨....
Others water to go fishing, skiing or white - water rafting.有些人觉得海上旅游能使放松并感到清爽,有些人则到水边钓鱼 、 滑水或泛舟.World - class skiing, mountain climbing, mountain hiking and white - water rafting are among them.世界级 的滑雪 、 登山 、 山地远足和激流泛舟便...
This action is caused in VCD and television industry blast a disturbance.此举在VCD及彩电业界引起阵阵骚动.Can you catalogue the VCD sets you sell and send me a copy?你能不能把你们出售的VCD机编成目录送我一份?VCD , loader shockproof foot , computer harddis...
Men came with buckets of water and began to douse the flames.人们提来一桶桶水灭火.The pumps were started and the crew began to douse the fire with water.水泵开动了，消防队员们开始用水灭火。Competitors quickly tried to douse another conflagration of...
We had an inkling that something might be happening.我们隐约感觉可能正有什么事情发生。He had no inkling of what was going on.他对正在发生的事情一无所知。He gave me an inkling of what was to come.他给我暗示将要发生什么事....
They forbid any ships to enter the water.他们禁止任何船舶进入这片水域。No. I forbid it. You cannot...不，我不允许那样，你不能…They'll forbid you to marry...他们不会准许你结婚。They'll forbid you to marry.他们不会准许你结婚。The bylaws forbid playing ball in...