pneumatic brake

例句：

1. 1. The car's air brakes are working properly.
   这辆车的气动刹车工作正常。
2. 2. He used to drive a truck with an air brake system.
   他过去开的是装有气动刹车系统的卡车。
3. 3.The train is equipped with pneumatic brakes for safety reasons.
   为了安全起见，火车配备了气动制动系统。