1. （公共）图书馆
    A public library is a building where things such as books, newspapers, videos, and music are kept for people to read, use, or borrow.

    e.g. ...the local library...
           当地图书馆
    e.g. She issued them library cards.
           她给他们发了借书证。

2. （私人）收藏的图书（或唱片等）
    A private library is a collection of things such as books or music, that is normally only used with the permission of the owner.

    e.g. My thanks go to the British School of Osteopathy, for the use of their library.
           感谢不列颠骨疗法学校允许我使用他们的藏书。

3. 书房；书斋
    In some large houses the library is the room where most of the books are kept.

    e.g. Guests were rarely entertained in the library.
           很少会在书房招待客人。