pneumatic power

例句：

1. 1.The car is powered by a pneumatic engine.
   这辆车由一个空气动力引擎驱动。
2. 2.The pneumatic tire has excellent traction on wet roads.
   这种充气轮胎在湿路上有很好的抓地力。
3. 3.The pneumatic tube was used to deliver urgent messages during World War II.
   在二战期间，这种充气管被用来传递紧急消息。