无法删除该文件。 其他应用程序正在使用该文件，或者该文件只读。
Unable to delete file. It may be in use by another application or it may be read-only.
无法删除文件夹，该文件夹或父文件夹可能被标记为只读。
Unable to delete folder. The folder or parent folder may be marked as read-only.
快照是文件系统的静态只读副本，附网存储中的快照技术可以用于实现文件系统的活备份以及用于恢复被误删除的文件。
Snapshot is a read-only copy of file system, the snapshot in network attached storage can be applied to live backup or recovering removed files.
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