1.You can download some antivirus software.
你可以下载杀毒软件。
2.Online fishing is a common cheating way.
“网络钓鱼”是较常见的诈骗方法。
3.How canI prevent my computer from virus?
我怎样防止病毒入侵我的电脑?
4.The data in my computer have been lost.
我电脑里的资料都丢失了。
5.The firewall is very useful to computer users.
对电脑用户来说，防火墙很重要。
6.My system crashed when I surf the Intemet.
我上网的时候系统崩溃了。
7.Network security may affect state security.
网络安全或许会影响国家安全。
8.I bought some magazines on network security.
我买了一些网络安全的杂志。
9.She has installed some green software.
她已经安装了绿色软件。
10.Network security is a synthetic discipline.
网络安全是一门综合性学科。
11.He is a network security engineer.
他是一个网络安全工程师。
12.The software protects the data automatically.
软件自动保护你的资料。
13.The network security protocol has expired.
网络安全协议已经过期。
14.360 security guards are totally free.
360安全卫士完全免费。
15.His computer was infected by virus.
她的电脑感染了病毒。
16.You should install afrre wall in the computer.
你应该安装防火墙。
17.Don't open the e-mail sent by strangers.
不要打开陌生人发送的邮件
18.Virus may be lurking in an illegal website.
病毒或许藏在非法网站里。
19.You need to upgrade antivirus software.
你需要升级杀毒软件。
20.Some hackers may control your PC illegally.
黑客可能非法控制你的电脑。
21.The FBI was attacked by hackers days ago.
FBI前几天被黑客攻击了。
22.Online crimesincreased year by year.
网络犯罪案件逐年增加。
23.Network security technology changes each day so we needn't worry about virus invading.
网络安全技术日新月异所以不用担心病毒入侵。
24.Network security courses are available online so you can turn to the Intemet for help.
网上有网络安全课程，所以你可以求助网络。
25.In recent years network security technology has improved comprehensively.
近几年网络安全技术得到了全面的提高。
终极加油站：
antivirus software(杀毒软件)firewall(防火墙)crash(崩溃)install(安装)auto-matically(自动地)expire(过期)upgrade(升级)attack(攻击)
