Ключевые слова: air, arabic, area, asia, business, chemical, chimney, city, climate, construction, crane, danger, diesel, east, ecology, energy, engineering, environment, factory, gas, gasoline, global, harbor, industry, machine, nature, nuclear, oil, pipe, pollution, port, power, refinery, ship, silhouette, sky, skyscraper, smog, smoke, station, steam, structure, sunset, technology, thermal, tower, toxic, tube, urban,