active anti-viruses software的用法和样例：
- BoltBait> Norton's is the most annoying anti virus software ever!
- Last but not least, I advise every member to install Anti virus software to your machine. Update your virus definition file regularly. Hope this FAQ can help you out. Thanks.
- Free Kaspersky Internet Security key and Free Kaspersky Anti Virus key.
- It was showed from the anti virus experiment in vitro that 8mg crude drug/ml of Guizhi decoction could inhibit cytopathy induced by 10 strains of viruses associated with respiratory infection at the different extents.
- To be safe, download from sites you trust, and use up-to-date virus software.