tower excavator

例句：

1. 1. The tower excavator is used to dig holes in the ground.
   塔式挖掘机用于在地面上挖掘洞。
2. 2.The tower excavator was used to level the land for construction.
   塔式挖掘机被用来平整土地以供建设使用。
3. 3.The tower excavator has a powerful engine and can handle heavy loads.
   塔式挖掘机拥有强大的引擎，能够处理重载。