英文關鍵字
access
accessibility
approach
barrier
beyond
block
close
closed
concept
cross
crossing
door
doorframe
doorway
enter
entrance
entry
escape
exit
flight
gray
handle
hindrance
home
indoor
interior
leave
lock
narrow
object
obstacle
obstruction
open
opened
opening
out
over
passage
passing
planks
security
series
speed
stuck
velocity
way
white