英文關鍵字
air
alternative
carbon
care
change
chemical
chimney
choice
climate
coal
concept
conservation
dioxide
ecological
electricity
energy
environmental
factory
fossil
fuel
gas
gasoline
generation
global
green
industry
nature
oil
petroleum
photography
planet
pollution
power
production
renewable
resource
respect
smog
smoke
solar
station
supply
sustainable
technology
turbine
warming
wind
windmill