英文關鍵字
aerial
air
architecture
background
blue
carbon
chemical
chimney
city
climate
cloud
coal
dioxide
dirty
ecology
electric
emissions
energy
environment
exhaust
factory
fuel
gas
global
heat
heavy
industrial
industry
landscape
pipe
plant
pollute
pollution
power
production
radioactive
sky
skyline
smog
smoke
smokestack
stack
station
steam
steel
technology
tower
toxic
white