機器
access
accessibility
architecture
barrier
building
check
city
construction
design
door
enter
entrance
entry
exit
gate
gateway
granite
hall
inside
interior
iron
leave
line
locked
metro
modern
open
pass
passage
passenger
portal
railroad
railway
row
security
sign
station
stile
subway
technology
ticket
train
transportation
turnstile
underground
urban
way