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...
His second wife, Alice, was determined to alienate him from his two boys.他的第二任妻子艾丽斯，决意要疏远他和两个儿子的感情。On the far side of the street, two boys were playing marbles.在街道的那一边，两个男孩在玩弹子游戏。Boys in the boat bought buoys in the moat...
The ground had opened to disgorge a boiling stream of molten lava.大地开裂，汩汩冒出炽热的熔岩。The city was entombed in volcanic lava.城市被火山熔岩掩埋。Lava is extruded from the volcano.熔岩从火山中喷出。...
You have to know where to stand for a good viewpoint.你得知道站在哪里观察角度比较理想。The handles stand proud of the doors of the car.把手位于车门之外。She is to stand as a Member of the European Parliament.她将竞选欧洲议会议员。...
Supplementary oxygen is rarely needed in pressurized aircraft.密封的飞机内很少需要补充氧气。There is a supplementary water supply in case the rain supply fails.万一主水源断了,我们另外有供水的地方.A supplementary volume has been published containing the...
...100g wholemeal or rye flour.100克全麦或黑麦面粉I was eating ham and Swiss cheese on rye.我正吃夹火腿和瑞士干酪的黑麦面包。By cereals we mean wheat, oats, rye, barley, and all that.谈到谷物,我们指的是小麦 、 燕麦 、 黑麦 、 大麦之类的东西....the protagonist of J. D. S...