Ключевые слова: air, architecture, asia, building, chemical, chimney, city, cityscape, dirty, dust, ecology, energy, environment, environmental, factory, fog, global, global warming, industrial, industry, landmark, landscape, manufacturing, mist, modern, pipe, plant, polluted, pollution, power, production, sky, skyline, skyscraper, smog, smoke, smokestack, steam, structure, sunset, tower, town, toxic, travel, urban, view,