In an HDBMS like the one illustrated above, the only way to discover this would be an extremely costly search of every book leaf node.

在上面举例说明的HDBMS中，找到答案的唯一方法是搜索每个书籍叶节点，而这样做的成本极其高。

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The withered oak leaf in the book here recalled the friend, the schoolfellow, who was to be his friend for life.

这本书里枯萎的橡树叶使他想起了他的一个朋友兼同学，同时也是一位终身的朋友。

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It seemed to him just as if one turned over a leaf in a book.

在他看来，这就像翻了一页书一样。

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This loose-leaf book, the work of a retired estate planner, has fill-in-the-blank pages for everything from bank and stock accounts, to life insurance policies, to family medical history and funeral preferences.

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Still trying to understand Clara, he asks her about the pressed leaf in her travel book.

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Other more prominent names could take a leaf out of the book of a player who remains unsung and under-rated.

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