booker

例句：

1. 1. He is a booker at the local library.
   他在当地的图书馆担任图书管理员。
2. 2. The librarian recommended this book to me.
   图书管理员向我推荐了这本书。
3. 3. The bookseller was busy with customers all day.
   那个书商整天忙于接待顾客。