英文關鍵字
appliance
background
blue
cable
caucasian
circuit
close
closeup
concept
connect
connection
cord
current
device
electric
electrical
electricity
energy
equipment
extension
finger
hand
home
house
human
indoors
insert
isolated
light
male
man
outlet
people
plug
power
put
real
room
socket
sockets
supply
switch
technology
time
unplug
unplugging
voltage
volts
wall
white
wire