pneumatic clay digger

例句：

1. 1.The pneumatic drill is very efficient for cutting through concrete.
   气动钻机在切割混凝土时非常高效。
2. 2. The pneumatic tire has a higher load capacity than the traditional tire.
   气动轮胎的承载能力比传统轮胎高。
3. 3. The pneumatic tubes are used to deliver urgent messages quickly.
   气动管被用来快速传递紧急信息。