This is a fancy way to say that the comparison involving the entire set is true if the comparison is true for some node in the node-set - in other words, if a node exists that makes it true.
这种奇特的说法的含义是只要对节点集中某些节点比较成立，则整个集合的比较也成立—换句话说，只要存在一个节点则结果为真。
This is a fancy way to say that the comparison involving the entire set is true if the comparison is true for some node in the node-set - in other words, if a node exists that makes it true.
这种奇特的说法的含义是只要对节点集中某些节点比较成立，则整个集合的比较也成立—换句话说，只要存在一个节点则结果为真。
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