Ключевые слова: boy, build, building, bulldozer, car, child, childhood, color, construction, cute, dig, digger, equipment, excavator, fun, happy, heavy, industrial, industry, kid, leisure, little, loader, lorry, machine, machinery, model, outdoor, outside, play, playground, sand, sandbox, sandpit, site, small, summer, tiny, toddler, toy, tractor, transport, transportation, truck, vehicle, wheel, work, yellow, young,