2 sentences

1. 京沪高铁现已实现全线通车。

   Jīng Hù gāo​tiě xiàn yǐ shí​xiàn quán​xiàn tōng​chē.

   The Beijing-Shanghai High-Speed Railway is now fully operational along its entire line.

   Source: Dong Chinese Dictionary

2. 这列火车正在京沪线上运行。

   zhè liè huǒ​chē zhèng​zài Jīng Hù xiàn shàng yùn​xíng.

   This train is running on the Beijing-Shanghai line.

   Source: Dong Chinese Dictionary