Ключевые слова: air, architecture, atmosphere, building, chemical, chimney, city, climate, cloud, construction, danger, dirty, ecology, electricity, energy, environment, environmental, exterior, factory, fire, fuel, global, health, industrial, industry, landscape, old, pipe, plant, pollute, pollution, power, road, sky, smog, smoke, smokestack, stack, steam, technology, tower, town, urban, view, warming, white,