英文關鍵字
abstract
atom
background
ball
bass
beam
black
blue
bright
color
danger
dangerous
electric
electricity
electron
electronics
energy
experiment
flame
gas
glass
globe
glow
glowing
ground
hadron
illumination
isolated
lamp
light
lightning
luminescence
music
nature
negative
neon
nuclear
plasma
positive
power
purple
ray
red
risk
science
scientific
speaker
sphere
tech
technology
touch