Ключевые слова: activity, asphalt, black, building, bulldozer, cable, city, closeup, connection, construction, day, deep, detail, engine, equipment, flow, go, heavy, highway, industrial, industry, job, lay, light, long, machine, machinery, manual, metal, new, outdoors, pavement, pipe, pole, power, repair, road, site, steel, street, traffic, tram, transport, transportation, under, urban, vehicle, wire, work, worker,