pneumatic tank

例句：

1. 1. The airship is powered by a pneumatic engine.
   这艘飞艇由一个气动引擎驱动。
2. 2.The pneumatic tire has excellent traction on wet roads.
   这种充气轮胎在湿路上具有极好的抓地力。
3. 3. The pneumatic tubes were used to deliver urgent messages during the war.
   在战争期间，人们使用气筒传递紧急信息。