Ключевые слова: america, backgrounds, board, celebrate, celebration, closeup, concept, construction, copyspace, day, different, driver, electrical, empty, engineering, equipment, excavator, freedom, gear, greeting, hammer, happy, holiday, industry, labor, lay, machanical, machine, mechanic, metal, motor, national, occupation, patriotism, seat, space, states, symbol, table, text, tool, united, usa, view, weekend, wheel, work, worker, world, wrench,