rail oil

例句：

1. 1. The train was running on the rail oil.
   火车正在使用铁路油运行。
2. 2.The railway company is responsible for maintaining the rail oil supply.
   铁路公司负责维护铁路油的供应。
3. 3. The rail oil tanker arrived at the port last week.
   上周，铁路油罐车抵达了港口。