如果你想搜索图书馆藏书，却不知道作者的名字、书名或文章的确切名称，你必须设置关键字查询。

If you want to search the library holdings and don't know the author's name or the exact title of the book or an article, you have to set up a keyword search.

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有时候，仅仅是书名或是作者的名字还不能勾起别人对一本书的回忆。你需要去描述一下书中的故事。

Sometimes the name of a book or an author isn't enough to jog someone's memory and you need to describe the story.

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