His father is the librarian of our school library.他父亲是我们学校的图书馆馆长。
If you can't find the book you need, you can ask the librarian for help.如果你找不到你需要的书,你可以请图书馆管理员帮忙。

［词源］＜拉丁语librarius(抄书的人)