Ключевые слова: background, brown, canal, communication, conduit, construction, country house, deep, development, dig, dirt, ditch, drain, drainage, drip, earth, earthen, earthmoving, earthwork, eco, ecology, equipment, excavating, foundation, ground, hole, housing, industry, irrigation, line, mining, moat, outdoor, pipeline, pipework, pit, preparation, repair work, sewage, sewer, sewerage, soil, system, technology, trench, under, underground, warning, water supply, work,