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All the nodes in a node tree have relationships to each other.
节点树中的所有节点都彼此关联。
A node tree shows an XML document as a set of nodes and the connections between them.
节点树以一组节点的形式展示了整个XML文档,并指明了它们之间的连接关系。
Look at the following XML file: books.xml.
请看看下面这份XML文件:books.xml。
The following image illustrates a part of the node tree and the relationship between the nodes in the XML file above:
下面这张图指明了节点树的一部分,并勾画了上述xml文件内节点之间的关系: