Ключевые слова: aerial, air, architecture, asia, background, center, china, city, cityscape, dirty, downtown, environment, environmental, exterior, fog, foggy, global, haze, health, high, industrial, landscape, metropolis, mist, modern, morning, polluted, pollution, problem, scene, sky, skyline, skyscraper, smog, smoke, top, tower, town, toxic, travel, unhealthy, urban, view,