将联合加成 - 消除反应的结果称为缩合反应.The combined addition - elimination sequence is referred to as a condensation reaction.与氰氢酸的加成是碱催化的.The addition reaction with hydrogen cyanide is base - catalysed.溴化氢加成的最后一步,是负离子亲核试剂的附加.The additio...
Ceiling and wall lights can operate independently.吊灯和壁灯可单独开关。The commission will operate independently of ministers.委员会将独立运作，不受各部部长管辖。He is independently wealthy.他靠自己的努力而致富。...
Most of the time I'm just thankful that I've got a job.多数时候我只是庆幸自己有份工作。They were thankful for the excellent goalkeeping of John Lukic.守门员约翰·卢基奇的精彩表现让他们感到庆幸。I am just thankful that we have a roof over our heads....
He had jumped overboard in New York harbor and swum to shore.他在纽约港跳下船，游上了岸。He has swum the English Channel three times.他已三次游过英吉利海峡.The English Channel has often been swum.时常有人游过英吉利海峡....