英文關鍵字
aerial
alternative
arid
closeup
conservation
conserve
desert
development
ecosystem
electric
electricity
energy
engine
engineering
environment
environmental
environmentalism
farm
fuel
generation
generator
green
industry
meadow
mountain
nature
power
production
propeller
renewable
resources
sky
supply
sustainability
sustainable
technology
turbine
view
weather
wheel
wind
windmill
windy