与传统的查询扩展不同，XML查询扩展不仅要对文档内容进行有效扩展，而且还要考虑结构扩展。

Compared with traditional query expansion, XML query expansion is different from traditional query expansion, which expands not only to document content, but also structural expansion.

youdao

与传统的查询扩展不同，XML查询扩展不仅要对文档内容进行有效扩展，而且还要考虑结构扩展。

Compared with traditional query expansion, XML query expansion is different from traditional query expansion, which expands not only to document content, but also structural expansion.

youdao