main line
noun[C]
uk/ˌmeɪn ˈlaɪn/us/ˌmeɪn ˈlaɪn/animportantrailwayroutebetweenlargetownsorcities:
(铁路的)干线themainlinebetweenNew York and Philadelphia连接纽约和费城的铁路干线
Railways & railway lines
- Amtrak
- artery
- branch line
- electrify
- funicular
- junction
- level crossing
- light rail
- light railway
- metro
- monorail
- railroad
- railroad tie
- RR
- siding
- signal
- signal box
- switch
- switchback
- underground