但是当人们无法上网但需要查杀一些计算机上遗留的已知病毒的时候，用户还是需要使用安装在本地计算机上的杀毒软件。
Users will still want local anti-virus software on their computers for those times when they are not online and to deal with legacy and known viruses.
但是当人们无法上网但需要查杀一些计算机上遗留的已知病毒的时候，用户还是需要使用安装在本地计算机上的杀毒软件。
Users will still want local anti-virus software on their computers for those times when they are not online and to deal with legacy and known viruses.
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