英文關鍵字
energy
environmental
fumes
global
warming
industrial
power
steam
technology
acid
air
ecology
atmosphere
climate
smoke
burning
chemistry
chimney
city
cloud
condensation
contamination
damage
dioxide
dirty
chemical
emit
environment
factory
timelapse
fog
gas
generator
greenhouse
effect
heavy
human
industry
chimneys
landscape
ozone
pipe
polluting
pipes
plant
poison
pollution
time
lapse