eplace是指两个事物之间的替代.例：I replaced you with him as the contestant in the competition.
displace是指一个事物的转移.例：I displaced you as the contestant（选手） from this competition to that one.
另外Replace还有放回原处的意思.当然如果Displace做替代讲的话,他有新事物使被替代事物失去地位,失去作用,失去功能的意思.
displace和replace的区别