[W3C Recommendation] is a language for describing transforms from an input XML document to an output tree.
是一种转换语言,描述从输入 XML 文档到输出树的转换。
XPath provides the expression language necessary to locate and retrieve individual nodes or node collections from the HTML document tree.
XPath提供从HTML文档树定位和检索单个节点或节点集所需的表达式语言。
The first is called generic, which is a generic tree representation that's formed from the language front-end trees.
第一种是GENERIC,它是一种通用的树表示法,由语言前端树构成。
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