Ключевые слова: big, building, cabin, clean, cleaning, construction, design, dig, ditch, drive, durable, earth, equipment, excavator, force, heavy, hole, invention, iron, ladle, load, machine laver, mechanics, mechanism, metal, mobile, old, paint, painted, passability, pit, power, powerful, processing, productivity, progress, reliability, resource, rust, scattering, skilled, soil, solid, stable, steel, transport cologique, unit, weight, wheels, work,