Ключевые слова: background, brown, canal, communication, conduit, construction, country, deep, development, dig, digging, dirt, ditch, drain, drainage, drip, dug, earth, earthen, earthmoving, earthwork, eco, ecology, equipment, excavating, fiber, foundation, ground, hole, house, housing, industry, irrigation, laying, line, long, mining, moat, optic, outdoor, pipe, pipeline, pipework, pit, repair, sewer, sewerage, soil, system, trench,