A tree is a hierarchical structure that defines a parent-child relationship.
树是一个定义了“父子”关系的层次结构。
How to make tree from child of parent categories?
如何从父类的孩子让树？
Verify that all of the parent-child relationships in the tree are correct before you publish.
请先检查树状结构中的所有父-子关系是否正确后再发行。
Verify that all of the parent-child relationships in the tree are correct before you publish.
请先检查树状结构中的所有父-子关系是否正确后再发行。
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