n.防病毒；反病毒
I spent most of the day Wednesday killing off the virus and vaccinating uninfected systems. 星期三那一天我把大部分时间花在清除病毒并给未受感染的系统安装防病毒程序。
We must have the common understanding that we should not let our guard down to prevent a new outbreak of the deadly virus. 国人仍须保持警戒之心，以防病毒再次肆虐，这是我们的共识。
Most AV programs use a database of known virus signatures. 大多数反病毒程序使用已知病毒特征数据库。
