英文關鍵字
aged
arrival
bahn
building
business
central
city
cyan
day
departure
destination
efficient
electric
energy
engine
europe
express
frankfurt
german
germany
high
ice
intercity
international
locomotive
metro
new
passenger
platform
rail
railroad
railway
rapid
sky
speed
station
steel
stop
subway
technology
track
train
transit
transport
transportation
travel
trip
urban
way
white