Ключевые слова: air, architecture, building, chemical, chimney, city, clear, coal, condensation, damage, development, dioxide, disaster, ecology, environmental, exhaust, factory, fog, fumes, funnel, health, house, industrial, industry, labor, life, manufacturing, ozone, pipe, pollution, problem, progress, refinery, sky, smog, smoke, steam, tall, technology, top, tower, town, toxic, urban, working,