track spanner

例句：

1. 1.He used a track spanner to fix the broken rail.
   他用轨道扳手修好了断轨。
2. 2.The track spanner was essential for the construction of the railway.
   轨道扳手对于铁路的建设至关重要。
3. 3. The track spanner was used to remove the old tracks and install new ones.
   轨道扳手被用来拆除旧轨道并安装新轨道。