英文關鍵字
abstract
atom
background
ball
bass
beam
black
blue
bolt
boot
charge
crystal
danger
dark
electric
electricity
electronics
energy
experiment
flame
generator
glass
globe
glow
glowing
hadron
illumination
kinetic
lamp
light
lightning
luminescence
music
nature
negative
neon
nuclear
plasma
positive
power
purple
ray
red
science
scientific
shock
spark
speaker
sphere
tech
technology