Ключевые слова: aqueduct, big, blue, concrete, construction, county, dam, distribution, drinking, electricity, energy, engineering, environment, environmental, forest, gas, generation, hydro, hydroelectric, industrial, industry, installation, metal, natural, nature, oil, penstock, pipe, pipeline, piping, plant, power, pressure, pumped, renewable, river, stair, station, steel, storage, substation, sunset, supply, system, transport, transportation, tube, utility, valve, water,