Ключевые слова: abstract, air, beautiful, blue, bright, cloud, color, cooling, day, effect, exhaust, fan, flow, good, heaven, home, hot, industry, light, metal, nature, outdoor, ozone, peace, power, roof, roofing, rooftop, silver, sky, space, steel, summer, sun, sunlight, temperature, texture, turbine, vent, ventilation, ventilator, view, weather, white, wind,