replacements
If you refer to the replacement of one thing by another, you mean that the second thing takes the place of the first.
the replacement of damaged or lost books.
受损或遗失书籍的更换或补充。
Someone who takes someone else's place in an organization, government, or team can be referred to as their replacement.
Taylor has nominated Adams as his replacement.
泰勒已经提名亚当斯为接班人。