book holder

例句：

1. 1. The book holder is responsible for the safety of the books.
   书的持有者负责书籍的安全。
2. 2. He was a book holder in his school.
   他是他学校的书的拥有者。
3. 3. The book holder decided to donate all the books to the library.
   书的拥有者决定将所有的书捐赠给图书馆。