pinwheels, αιολική ενέργεια, ανεμογεννήτρια, τοπίο, παραγωγή καυσίμων και ηλεκτρικής ενέργειας, γεννήτρια, προπέλα, ηλεκτρική ενέργεια, άνεμος, περιβάλλον, εναλλακτική ενέργεια
Public Domain
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