Ключевые слова: adult, bicycle, bike, brakes, casual clothing, caucasian, chain, craft, craftsperson, cycling, derailleur, entrepreneur, equipment, examining, expertise, garage, gear, horizontal, indoors, males, mechanic, men, mountain bike, mtb, occupation, one person, owner, place of work, rear, repair shop, repairing, repairman, ride, rotation, run, shift, shop, skill, small business, sport, sports equipment, testing, tire, transmission, transport, vehicle, wheel, working, workshop, young adult,