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。

youdao

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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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。

youdao

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.

FORBES: Organized from Beyond the Grave

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

BBC: Leon Osman and Richard Dunne set good example