英文關鍵字
switch
power
electricity
energy
light
white
wall
background
electric
double
electrical
home
modern
technology
plastic
interior
button
concept
house
off
isolated
design
control
supply
turn
equipment
closeup
electrician
panel
conservation
household
object
connect
connection
generation
indoor
press
silver
up
consumption
device
copy
current
illustration
industry
plug
shape
voltage