logging locomotive

例句：

1. 1. The logginglocomotive is essential for the operation of the mine.
   采煤机车对于矿井的运营至关重要。
2. 2. The coal-hauling locomotive was used to transport coal from the mine to the factory.
   采煤机车被用来将煤炭从矿井运送到工厂。
3. 3. The coal-pulling locomotive was designed to pull heavy equipment through the mountainous terrain.
   煤炭拖动式机车被设计来通过山区地形拖拽重型设备。