英文關鍵字
abstract
architecture
arrow
background
concept
danger
design
direction
door
doorway
emergency
escape
exit
fire
flashing
green
guidance
hallway
here
hotel
icon
illustration
indoors
information
inside
instruction
interior
isolated
leaving
light
lighted
modern
nobody
office
plastic
public
room
route
safety
salvation
security
sign
signs
symbol
text
wall
warning
way
white