However, if you modify the area of the tree that contains the node receiving the event, the events that you receive and the impact to the tree are undefined.
但如果修改的区域属于包含正接收该事件的节点的树，则接收的事件和对树的影响是不确定的。
However, if you modify the area of the tree that contains the node receiving the event, the events that you receive and the impact to the tree are undefined.
但如果修改的区域属于包含正接收该事件的节点的树，则接收的事件和对树的影响是不确定的。
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