Ключевые слова: boil, boiler, burn, commerce, commercial, convert, converting, electrical, electricity, gas, generating, generation, generator, heat, hot, huge, immense, industrial, industry, iron, ladder, lines, massive, oil, pipe, pipelines, piping, plumbing, power, powerful, robots, smokestack, steam, steel, steps, stock, streamlined, technical, technological, toxic, transformation, turbine, urban, walkway, waste, water, zone,