同时支持节点祖先后代关系，父子关系和兄弟关系的表示。
Moreover, LSEQ supported the representation of ancestor-descendant relationship, parent-children relationship and sibling relationship between any two nodes.
同时支持节点祖先后代关系，父子关系和兄弟关系的表示。
Moreover, LSEQ supported the representation of ancestor-descendant relationship, parent-children relationship and sibling relationship between any two nodes.
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