Ключевые слова: air, black, building, chimney, cold, compressor, conditioning, construction, contamination, cooler, cooling, dark, dawn, electric, emission, energy, engineering, equipment, exhaust, facility, factory, frosty, industrial, industry, light, machinery, manufacturing, metal, morning, movement, outdoors, outlet, outside, pipe, pipeline, pipes, plant, pollute, pollution, power, production, red, roof, sky, steel, technology, tubes, ventilate, ventilation, windows,