third rail
noun[C]
uk/ˌθɜːd ˈreɪl/us/ˌθɝːd ˈreɪl/ametalbar,runningparallelwithtraintracks, thatsupplieselectricityto sometypesoftrain
(用以给电力火车输入电流的)第三轨,接触轨Railways: trains & parts of trains
- baggage car
- bogie
- boiler
- boxcar
- bullet train
- caboose
- carriage
- choo-choo
- coach
- diesel
- emergency cord
- footplate
- freight car
- guard's van
- maglev train
- puffer train
- rolling stock
- sleeping car
- truck
- wagon-lit