He also deleted files from the computer system.

他也从计算机系统中删除了文件。

《柯林斯英汉双解大词典》

Recover Deleted Files on an NTFS Hard Drive from a Ubuntu Live CD

用Ubuntu激活光盘回复NTFS格式硬盘上删除的文件

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This method of recovering deleted files is handy for many applications, especially log files and databases.

对于许多应用程序，尤其是日志文件和数据库，这种恢复删除文件的方法非常有用。

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"There is a special module for recovering deleted files from USB sticks, " Mr Kamluk said.

BBC: 'Red October' cyber-attack found by Russian researchers

Being able to recover deleted files and revert to earlier versions of ANY file is really useful.

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It also makes it easier to find the files that have been created, accessed and modified during an attack, and it is able to reconstruct deleted files from raw data found in various hidden parts of a computer's hard disk, such as unallocated space and file slack.

ECONOMIST: Forensic computing studies the anatomy of computer crime