英文關鍵字
barrier
blocking
business
card
ceiling
center
check
checkpoint
corridor
design
door
electronic
entrance
equipment
ethrough
exit
floor
footstep
gate
gateway
glass
halflength
hall
hallway
interior
light
lobby
man
modern
moscow
noentry
passageway
pedestrian
restricted
security
sign
steel
stop
symbol
system
threepod
through
training
tripod
turnstile
woman