操作系统安全论文：网络安全初步探讨-计算机应用论文-论文中国 关键词：操作系统安全；网络安全；病毒安全 [gap=429]Keywords:Operating system security;Network security;Virus security
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病毒一清除，就可以安全地重新连接互联网。
Once you have removed the virus it is safe to reconnect to the Internet.
随着黑客的出现，从防病毒程序到防火墙的层层安全措施被添加进来，试图阻止他们。
As hackers turned up, layers of security, from antivirus programs to firewalls, were added to try to keep them at bay.
不久以前，人们还无法想象一种病毒能使众多国家封闭，而安全网被证明是如此灾难性地缺乏灵活性。
Not very long ago, it was also unthinkable that a virus would shut down nations and that safety nets would be proven so disastrously lacking in flexibility.
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