Ключевые слова: agriculture, blue, building, canal, channel, concrete, control, dam, energy, engineering, farm, field, flood, floodgate, flow, flowing, gate, irrigate, irrigation, landscape, line, lock, machine, metal, nature, old, open, plant, pouring, power, reservoir, ridge, river, sluice, soil, spring, station, system, technology, tube, water, waterb,