railway          
noun [ C ] UK uk/ˈreɪl.weɪ/ us/ˈreɪl.weɪ/ (US railroad)
A2 铁路,铁道
the metal tracks on which trains run
  We live close to the railway line. 我们家离铁道线很近。 
 She travelled across Siberia on the Trans-Siberian railway. 她乘火车沿西伯利亚铁路横穿西伯利亚。 
 A2 铁路系统
the system of tracks, stations, trains, etc.
  a railway station/timetable/siding 火车站/列车时刻表/铁路专用线等 
 Thomas Grant worked on the railway(s) for 50 years. 托马斯‧格兰特在铁路系统工作了50年。 
 - More examples
 - This area of the city is criss-crossed by railway lines.
 - The government has announced an ambitious programme to modernize the railway network.
 - A bomb exploded at one of London's busiest railway stations this morning.
 - The railway was built on a bed of solid rock.
 - There isn't any railway service on Sundays.