Ключевые слова: brown, building, business, construction, dig, ditch, dug, earth, energy, excavation, extract, extracting, forest, fuel, gas, grass, green, ground, industrial, industry, land, line, metal, nature, oil, outdoor, petrol, pipe, pipeline, power, red, road, round, soil, steel, supply, technology, terrain, tracks, tractor, transport, transportation, tube, vehicle, water, wire, work,