For example, in 2004, Google started its Google books project and set forth a challenge to organize all the world's information and digitize all the books ever printed in history.

比方说，2004年，谷歌开始Google Book项目，提出要将全球信息组织起来并对历史上所有印刷过的书本进行数字化，这是一个巨大挑战。

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When combined with the free online textbooks at sites like Textbook Revolution and TextBooksFree, plus other course books from Google Books, World Public Library, and Project Guttenberg, M.

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Those dimes from the keyword ads pay for Google's project to put millions of library books online.

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Google thought so, too, and designed the books project accordingly.

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