Isomerization occur during bromine reaction, that is mean secondary allylic configuration changes into primary allylic configuration.在溴化反应过程中存在分子结构重排, 即溴代仲位烯丙基构型向溴代伯位烯丙基构型发生转化....
Millions of people want new, simplified ways of interacting with a computer.数以百万计的人们想要新的简化方式实现人机交互。The interacting surfaces were lubricated with a mineral oil.相互作用表面是用矿物油润滑的.Proteins which have two separate but interacti...
The supermarket raffled fifty watches.这家超市以抽彩给奖法售出了50只表.Jimmy's prize melon was raffled to raise money for charity.吉米的战利品甜瓜被抽彩出售了,以筹集慈善资金.We raffled off a trip to the Bahamas.我们抽奖获得一次去巴哈马旅游的机会....
He won last month's presidential election by a landslide.他以压倒性多数赢得上月的总统选举。He recounted how heavily armed soldiers forced him from the presidential palace.他讲述了自己是怎样被全副武装的士兵从总统官邸里赶出来的。He recently did the catering for ...
The Seaman was a bar for pool players and hard drinkers.“水手”是供台球玩家和酒徒消遣的酒吧。The Greek seaman went to the hospital five times.这位希腊海员到该医院去过五次.Her father had been a mer-chant seaman, absent for much of her child-hood.她爸爸曾是商船...