φράγμα, νερό, εξω απο, βράχια, καφέ, μπλε, ουρανός, παραγωγή καυσίμων και ηλεκτρικής ενέργειας, ηλεκτρική ενέργεια, γεννήτρια, υδροηλεκτρική ενέργεια
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