Ключевые слова: acrid, air, air quality, atmospheric, chimneys, clouded, contamination, dark smoke, dense, dim, dreary, emitting, environment, environmental degradation, environmental pollution, factory, foggy, gloomy atmosphere, grey, grim, hazardous, hazardous gases, haze, heavy, industrial, industrialization, melancholic, noxious, obscured, ominous, oppressive, overcast, pollutants, polluted air, polluted atmosphere, polluted cityscape, sky, smog, somber, somber atmosphere, somberness, suffocating, thick, thick smog, toxic, toxic emissions, unhealthy, urban,