Shelves piled high with books; you will see many people file in and out every day. (图书馆的书架上摆满了书，每天这里都有着很高的人气。)

Shelves piled high with books; you will see many people file in and out every day. (图书馆的书架上摆满了书，每天这里都有着很高的人气。)
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