mining locomotive

例句：

1. 1.The mining locomotive was the first to reach the mine.
   采矿机车是第一个到达矿井的。
2. 2. The mining locomotive was used to transport coal from the mine.
   采矿机车用来从矿井运输煤炭。
3. 3. The mining locomotive was a crucial part of the mining operation.
   采矿机车是采矿作业中至关重要的一部分。