narrow-gauge steam locomotive

例句：

1. 1.The narrow-gauge steam locomotive was a marvel of engineering.
   窄轨蒸汽机车是工程学的奇迹。
2. 2.The narrow-gauge steam locomotive was used to transport goods over long distances.
   窄轨蒸汽机车被用来在长距离内运输货物。
3. 3.The narrow-gauge steam locomotive was considered the best way to move heavy loads.
   窄轨蒸汽机车被认为是移动重负载的最佳方式。