deleted data mark

例句：

1. 1. The software automatically marks the deleted files for recovery.
   这款软件会自动标记已删除的文件以便恢复。
2. 2. During the backup process, the system marked all the deleted files as inaccessible.
   在备份过程中，系统将所有已删除的文件标记为不可访问。
3. 3. The company uses a special marker to indicate which employees have been deleted from the database.
   该公司使用一种特殊的标记来指示哪些员工已被从数据库中删除。