Ключевые слова: air, atmosphere, calorific, chimney, coal, collecting, construction, crouched, danger, dust, ecologist, ecology, electric, electricity, emission, energy, environment, experiment, factory, filter, fume, gas mask, grass, heat, hill, industrial, industry, local, lung, petrochemical, pipe, plant, pollution, power, production, protection, researcher, samples, science, scientific, scientist, sky, smoke, station, steam, sunset, tower, uniform, waste, working,