英文關鍵字
abstract
air
ash
background
black
chemical
chemistry
cigarette
condensation
curve
dark
design
detail
dioxide
effect
energy
explode
explosion
floating
flow
flowing
fluffy
fog
form
frame
gas
isolate
isolated
jetting
light
magic
mist
motion
mystery
overlay
pattern
pollute
smog
smoke
smoky
smooth
spooky
steam
steamy
swirl
toxic
vapor
wave
white