railroad traction

例句：

1. 1. The train's high-speedrail system is a major transportation network inthe city.
   该列车的高速铁路系统是该市的主要交通网络。
2. 2. The new railwayline will greatly enhance the efficiency of thetransportation system.
   这条新的铁路线将极大地提高运输系统的效率。
3. 3. The railway traction systemis crucial for maintaining the smooth operation ofthe train.
   铁路牵引系统对于保持火车平稳运行至关重要。