英文關鍵字
chemical
chemistry
chimney
complex
emission
energy
environment
factory
fuel
gas
industrial
industry
oil
pipe
plant
pollute
pollution
power
production
refinery
sky
smoke
smokestack
stack
steam
steel
technology
tower
tube
warming
英文關鍵字
chemical
chemistry
chimney
complex
emission
energy
environment
factory
fuel
gas
industrial
industry
oil
pipe
plant
pollute
pollution
power
production
refinery
sky
smoke
smokestack
stack
steam
steel
technology
tower
tube
warming