英文關鍵字
abc
abstract
alphabet
blue
bolt
charge
circle
collection
danger
design
discharge
effect
electric
electrical
electricity
energy
explosion
flare
flash
font
force
glow
high
isolated
letter
light
lightning
lucent
message
modern
plasma
power
powerful
radiant
shape
shock
sign
signboard
storm
strike
symbol
technology
text
thin
thunder
voltage
zero