a walking library
步行图书馆
以上为机器翻译结果，长、整句建议使用 人工翻译 。
He is a walking library.
他是一座活图书馆。
youdao
He is a walking library, and should know the answer.
他是个活图书馆，会知道答案的。
It's not too difficult, but is still considerably more complicated than walking into the library and pulling a book off the shelf.
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