In the event of an emergency, passengers riding on the subway trains are able to contact the control center through the wireless intercom devices installed on every carriage.
在紧急情况下，乘坐地铁列车的乘客可以通过安装在每节车厢里的无线对讲设备与控制中心联系。
2
The camera in the carriage can automatically transmit images back to the control center.
车内的摄像头可以自动将图像传回控制中心。
3
It is a kind of person rides to multiply horses or control the agonistic project of carriage.