英文關鍵字
alternative
conceptual
ecological
ecologically
ecology
energy
farm
green
power
sunset
turbines
video
wind
windmill
windmills
windturbine
windturbines
英文關鍵字
alternative
conceptual
ecological
ecologically
ecology
energy
farm
green
power
sunset
turbines
video
wind
windmill
windmills
windturbine
windturbines