让你有一个好的反病毒程序，并以此频频。
Make sure you have a good anti-virus program and use it frequently.
反病毒程序是有必要用的但是仍不能够经常的阻止渗透。
Anti-virus programs are necessary but don’t always guard against intrusions.
许多公司，在这个此页列出，分发反病毒程序。
Many companies, including those listed on this page, distribute antivirus programs.
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