track laying tractor

例句：

1. 1. The track laying tractor is usedto lay the tracks for railways.
   轨道铺设拖拉机用于铁路轨道的铺设。
2. 2. Thetrack laying tractor has a powerful engineand can cover large areas quickly.
   轨道铺设拖拉机拥有强大的引擎，可以迅速覆盖大面积区域。
3. 3. The track laying tractor isessential for maintaining the safety of railways.
   轨道铺设拖拉机对于维护铁路安全至关重要。