英文關鍵字
background
black
blue
bright
button
circle
colors
control
copy
dark
electric
electrical
electricity
electronic
element
energy
equipment
glow
icon
illuminated
industrial
industry
interface
isolated
key
light
lighting
luminescent
luminosity
luminous
modern
object
off
part
power
powerbutton
powering
ring
round
shape
sign
space
supply
switch
symbol
tech
technology
video