Ключевые слова: architecture, background, blue, bridge, building, cascade, concrete, construction, ecosystem, efficiency, electric, electricity, energy, engineering, environment, environmental, flow, flowing, forest, generation, give, green, hydro, hydroelectric, infrastructure, lake, landmark, landscape, mountain, natural, nature, outdoors, plant, power, renewable, reservoir, river, sky, station, structure, summer, sustainable, technology, travel, turbine, view, wall, water, waterfall,