machine rammer

例句：

1. 1. The machine rammer is used to break up rocks for construction.
   机器锤用于破碎岩石以进行建筑。
2. 2. The engineer used the machine rammer to level the ground.
   工程师使用机器锤来平整地面。
3. 3. The machine rammer was a crucial tool in the mining industry.
   机器锤是采矿业中的关键工具。