If you refer to the replacement of one thing by another, you mean that the second thing takes the place of the first.
例句
...the replacement of damaged or lost books.受损或丢失图书的更换或补充
N-COUNT
替补(成员或队员);接替者
Someone who takes someone else's place in an organization, government, or team can be referred to as their replacement .
例句
Taylor has nominated Adams as his replacement...泰勒提名亚当斯接替他。The 18-year-old made his debut last week as a replacement for the injured Gordon Durie.这个18岁选手作为受伤的戈登·迪里的替补在上周首次出场。