英文關鍵字
allow
arrow
background
blink
bright
bulb
closeup
computer
direction
display
electric
electricity
energy
escalator
glass
glow
green
illuminated
indicator
led
light
lights
metro
move
movement
pointer
railing
rise
rules
shape
shiny
sign
signal
stairs
steps
subway
symbol
technology
underground
walk
warning
work