Ключевые слова: black, contractor, dark, delivery, development, dig, digger, dirtwork, dozer, durability, duty, earth, earthmover, engineer, engineering, equipment, excavate, excavating machine, excavator, grab, idea, industrial, isolated, lift, machine, machinery, mechanic, mechanism, motion, movement, navvy, object, orange, project, sky, strength, technology, toughness, traffic, transfer, transport, transportation, wheel, work,