rail welding train

例句：

1. 1. The railway welding train is a crucial tool for the construction industry.
   铁路焊接列车是建筑业的关键工具。
2. 2. The engineers used the railway welding train to repair the damaged tracks.
   工程师们使用铁路焊接列车来修理损坏的轨道。
3. 3. The railway welding train was responsible for transporting heavy materials across the country.
   铁路焊接列车负责将重材料从一个国家运输到另一个国家。