英文關鍵字
abstract
background
black
blue
button
circle
click
close
computer
concept
connect
control
design
electric
electrical
electricity
electronic
element
energy
equipment
finger
glossy
hand
hardware
icon
internet
key
led
light
macro
notebook
object
off
power
powerful
press
presses
push
round
shutdown
sign
start
switch
symbol
system
technical
technology
web
white