例如，清单30是一个XML文档，内容为文档及其名称、发布年份和页数。

For example, Listing 30 is an XML document of documents with name, year published, and number of pages.

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例如，来看一下清单1，这是一个内容为文档及其名称、发布年份和页数的XML文档。

For example, consider Listing 1, which is an XML document of documents with their name, year of publication, and number of pages.

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可以查询数据，以找到在给定年份发布的或者页数在某个范围内的文档。

The data can be queried to find documents published in a given year or within a range of pages.

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