replacement
n. 代替，更换；取代（或代替）的人（或物）；补充兵员
复数 replacements
例句
We need to find a replacement for Sue.
我们需要找一个替代休的人。
《牛津词典》
She will continue in her present job until a replacement can be found.
在找到替换人员以前，她将继续做她目前的工作。
His death was totally unexpected and, in consequence, no plans had been made for his replacement.
他的死纯粹出乎意料，因此还没有为他的替代人定出计划。
《柯林斯英汉双解大词典》
