Vaccination immunizes people against smallpox.种牛痘可以免患天花.Vaccination immunizes one against smallpox.接种牛痘能使人免患天花.A health worker immunizes an infant in Nepal.医疗工作者在尼泊尔为婴儿注射预防针....
His dog is too wild, so it is hard to keep under control.他的狗太野了, 所以很难去控制它.We should try to keep under control and put it to the best use of mankind.我们应该使之置于我们控制之下,使其为人类发挥出最大作用....
The use of machinery has superseded manual labour.机器的使用已经取代了手工劳动.Flintlock: Ignition system for firearms early 16 th century, It'superseded the matchlock and the wheel lock.燧发机: 火器点火系统,始于16世纪初, 取代火绳机和转轮打火机转轮打火机.Hand...