想想你如何使用一本书。

Think about how you use a book.

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如果某本书看上去有用，接下去要考虑的是如何使用它。

If a book looks useful, always consider how you should use it.

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如何更有效地使用本书？

How to use this book effectively?

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如何更有效地使用本书？

How to use this book effectively?

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