to be used instead of something else 代替；取代◆The new design will eventually replace all existing models. 新的设计最终将取代所有现有的型号。◆Their currency has been replaced with the US dollar. 他们的货币已被美元取代。
to take a new job, or to put a new person in a job, instead of sb else （用…）替换；（以…）接替◆Mr Hill replaces the outgoing Head of Communications. 希尔先生接替即将离任的通讯部主管。◆People leaving are not being replaced. 离职的人尚无人替代。◆She will be very difficult to replace. 她的位置很难有人接替。
() to change sth that is damaged, old, or does not work properly for sth new or better 更换；更新◆People aren't replacing their computers as often as manufacturers would like. 人们不会如制造商所愿，频繁地更换计算机。