element tree 元素树
Element Tree and Serialization 元件树和序列化
feature element tree 特征元素树
element content of tree ring 年轮元素含量
This means that you still need to use XML structural constructs like Element or Text, and you still need to do a decent bit of tree walking.
这意味着仍然需要使用Element、Text这样的XML结构成分，仍然需要适当的树遍历。
It matches any single element in the document tree.
它匹配在文档树中的任意一个元素。
As mentioned earlier, the SOAP element in the tree corresponds loosely to the SOAP envelope.
正如前面提到过的，树中的SOAP元素松散地对应于SOAP信封。
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