Ключевые слова: bicycle, bulb, cloud, color, colorful, computer, drop, electric, electricity, energy, environment, equipment, flat, fuel, heat, icon, icons, illustration, industrial, industry, infographic, interface, leaf, lighting, natural, nature, nuclear, object, pictogram, plant, plug, pollution, power, recycling, savings, set, station, sun, symbol, temperature, tree, water, web, wind,