英文關鍵字
background
ball
beams
bright
dark
electricity
energy
flash
glow
illuminated
light
lightning
motion
night
plasma
power
ray
science
tesla
voltage
80s
strike
nikola
bolts
close-up
electrode
rays
container
center
high-voltage
inert
gas
noble
dome
sphere
tube
closeup
detail
close
globe
electrodes
filaments
discharge
arc
beam
electric
glass
lamp
orb
physics
shine
spark
technology
1980s