Ключевые слова: background, brick, build, building, business, connection, construction, consume, distribution, energy, equipment, factory, gas, gasoline, heat, industrial, industry, joint, line, liquid, metal, natural, nobody, object, outdoors, pipe, pipeline, pipes, piping, plumbing, power, pressure, production, pump, red, safety, steel, system, technology, transportation, tube, wall, warm,