Ключевые слова: air, architecture, atmosphere, blue, building, chemical, chimney, contamination, control, dioxide, ecology, emission, emissions, energy, environment, environmental, exterior, factory, flues, frame, fumes, gas, industrial, industry, manufacturing, nobody, pipe, pipes, polished, pollution, power, reflection, reflex, sky, smoke, smokestack, stack, steel, structure, technology, tower, tube, warming,