钻工正在操作大型钻井设备。

The ___driller is operating the large drilling equipment.

我需要一个电钻在墙上打孔来挂画。

I need an electric ___driller to make holes in the wall for hanging pictures.

作为团队的首席钻探手，他在训练中展示了完美的队形变换。

As the team's top ___driller, he demonstrated flawless formation changes during practice.