機器
access
accessibility
airport
automatic
barrier
business
card
check
china
city
design
disabled
door
enter
entrance
entry
exit
gate
gateway
hong
interior
kong
line
metro
modern
open
pass
passage
passenger
people
public
rail
railway
row
security
smart
speed
station
subway
technology
ticket
train
transit
transport
transportation
travel
turnstile
underground
urban