Ключевые слова: activity, background, backhoe, bucket, build, bulldozer, construction, crane, dig, digger, dirt, earth, engineering, equipment, excavation, excavator, ground, heavy, helmet, hydraulic, industrial, industry, isolated, land, loader, machine, machinery, maintenance, mining, mover, power, road, sand, scoop, shovel, site, sky, soil, tool, tools, toy, tractor, transport, transportation, truck, vehicle, wheel, work, yellow,