Ключевые слова: architecture, blue, building, china, city, construction, contaminate, contamination, dirty, disposal, ecology, emission, fabrication, factory, holding, industrial, industry, infect, infrastructure, metal, metallurgy, modern, mud, outburst, pipeline, plant, pollute, pollution, production, sky, smoke, smudgy, steel, steelmaking, structure, tower, transportation, view, work,