ανεμόμυλος, Νύχτα, ουρανός, φεγγάρι, αστέρια, έρημος, άμμος, ανεμογεννήτρια, παραγωγή καυσίμων και ηλεκτρικής ενέργειας, ηλεκτρική ενέργεια, αιολική ενέργεια
Public Domain
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