rail saw

例句：

1. 1. The railway was damaged by the heavy rain, and we needed to use a rail saw to repair it.
   大雨损坏了铁路，我们需要用轨道锯来修复。
2. 2.The track saw was used to remove the old rails from the tracks.
   轨道锯被用来从轨道上移除旧的铁轨。
3. 3. The engineer used the rail saw to cut through the thick steel rails.
   工程师使用轨道锯切割厚厚的钢轨。