英文關鍵字
battery
black
charge
charger
charging
chemical
color
complete
computer
concepts
copy
cylinder
dead
design
device
digital
discharged
discharging
divisions
down
dying
electric
electrical
electricity
element
empty
energy
equipment
error
flashing
freshness
fuel
full
future
futuristic
generation
glossy
green
icon
indicator
isolated
low
power
recharge
reflection
screen
sign
space
symbol