您也可以通过工具栏或菜单访问delete操作，该操作能够删除以所选择的节点为根节点的子树。
The delete action is also accessible via the toolbar or the menu and has the effect of deleting the subtree rooted at the selected node.
您也可以通过工具栏或菜单访问delete操作，该操作能够删除以所选择的节点为根节点的子树。
The delete action is also accessible via the toolbar or the menu and has the effect of deleting the subtree rooted at the selected node.
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