worked penetration

例句：

1. 1. The newtechnology can penetrate the old system.
   新技术可以渗透旧系统。
2. 2. The virus penetrated throughthe skin barrier.
   病毒通过皮肤屏障渗透。
3. 3.The intruder penetrated the securityfence.
   入侵者穿过了安全围栏。