master control gate

例句：

1. 1.The master control gate is responsible for monitoring the traffic flow in the city.
   主控门负责监控城市内的交通流量。
2. 2.The master control gate is a crucial component of the security system.
   主控门是安全系统的一个关键组成部分。
3. 3. The master control gate is designed to prevent unauthorized access to the building.
   主控门的设计是为了阻止未经授权的人员进入大楼。