Since the mount tree has no parent for the new root, the system cannot be tricked into entering it like it can with chroot .

因为在挂载树中新的根目录没有父目录，所以无法像使用chroot时那样欺骗系统，从而访问真正的文件系统根。

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As shown in Figure 3, Ext JS also provides tree controls, which provide users with a familiar file system-like view.

如图3所示，Ext JS还提供树控件，这种控件提供用户熟悉的与文件系统相似的视图。

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A management model of distributed network security system with tree-like hierarchical structure was introduced.

提出了一种采用树形层次结构的分布式网络安全系统管理模型。

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