vehicles surveillance system

• 车辆监测系统

vehicles surveillance system的用法和样例：

例句

1. The road was chock-a-block with varieties of vehicles again today.
   马路上今天又塞满各种车辆了。
2. The new road system permits the free flow of traffic at all times.
   新的道路系统可使车辆在任何时候都畅通无阻。