pneumatic chisel

例句：

1. 1. The pneumaticchisel is used to quickly cut throughconcrete.
   气动凿子用于快速切割混凝土。
2. 2.He used a pneumatic chisel to remove the old paint from thewalls.
   他用气动凿子把墙上的旧油漆刮掉了。
3. 3. The pneumatic chisel was the only tool hehad that could handle the heavy workload.
   他唯一能处理重工作量的工具就是气动凿子。