英文關鍵字
app
application
background
blue
button
concept
control
design
electric
electrical
electricity
element
energy
hardware
icon
internet
lever
light
modern
object
off
plastic
power
powerful
press
push
red
regulator
shape
shutdown
sign
solving
start
steel
stop
switch
symbol
tech
technical
technology
toggle
trigger
turn
wall
web
website
white