Ключевые слова: air, building, carbon, chemical, chimney, coal, construction, cooling, dark, dusk, ecology, electric, electricity, emission, energy, environment, environmental, factory, fuel, gas, generation, generator, global, heat, industrial, industry, lake, mirror, night, nuclear, oil, plant, pollution, power, production, refinery, sky, smog, smoke, stack, station, steam, structure, sunset, technology, tower, twilight, vapor, warming, waste,