Ключевые слова: activity, big, building, building site, bulldozer, construction, earth, earth mover, earthmover, earthmoving, equipment, excavation, excavator, ground, heavy, heavy duty, heavyduty, huge, industrial, industry, ladder, loader, low angle view, machine, machinery, metal, mover, power, rubber, sand, site, soil, sprocket, staircase, stairway, tire, track, tractor, trail, vehicle, wheel, work,