例如，Google可以适当地辩解道它的图书扫描计划事实上能为图书创造一个更好的卡片目录，这有利于出版商和作者。

For instance, it can reasonably argue that its book-scanning project in effect creates a better card catalogue that helps publishers and authors.

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所以，如果出版商重新发行了它们的旧书目录（backlist）上的一本书（比如说在10年之后，这本书卖光了），而且加上了一个新的导言，那么我们会把新版本看作一本不同的书。

Therefore if a publisher re-issues a book in their backlist after the previous print run has been exhausted (say, a decade later) and with a new introduction, it is considered a different book.

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