機器
access
accessibility
airport
architecture
arrival
beijing
blue
check
chinacity
commute
construction
corridor
enter
entrance
entry
exit
fast
floor
gate
gateway
hall
interior
leave
metro
modern
nobody
pass
passage
passenger
portal
public
rail
railway
row
security
speed
station
subway
technology
ticket
train
transit
transport
transportation
travel
turnstile
underground
urban
way