pneumatic coal hammer

例句：

1. 1.The pneumatic hammer is designed for heavy lifting tasks.
   这种气动锤是为重物搬运任务设计的。
2. 2. The pneumatic tire has a longer lifespan than traditional tires.
   这种充气轮胎的使用寿命比传统轮胎长。
3. 3. The pneumatic pump is used to inflate the tires on our car.
   这种气动泵用于给我们的车充气。