railroad clearance

例句：

1. 1. The railroad clearance crew was busy clearing the tracks for the next train.
   铁路清障队正在忙着为下一班火车清理轨道。
2. 2. The company's new policy requires regular railway clearance to ensure safety on the tracks.
   公司的新政策要求定期进行铁路清障，以确保轨道上的安全性。
3. 3.The railway clearance team worked tirelessly to clear the area of debris and debris from the tracks.
   铁路清障队不懈努力地清除了轨道上的杂物和垃圾。