ground locomotive

例句：

1. 1.The train was grounded due to a fault in the tracks.
   由于轨道故障，火车被停下了。
2. 2.The engineer had to repair the ground locomotive before it could resume service.
   工程师在火车恢复服务之前必须修理地面机车。
3. 3. The new model of the ground locomotive is more efficient than its predecessors.
   新型地面机车比前一代更高效。