Ключевые слова: aged, angled, army, arrangement, art, bicycle, bicycle gear, black, blue, chain, child, cog, cog wheel, cogwheel, connection, cycle, engineering, equipment, gear, gearwheel, group, healthy, icon, illustration, industrial, industry, isolated, leisure, lifestyle, machine, machinery, mechanical, mechanism, motion, power, ride, seat, solid, sport, steel, technical, technology, traditional, transmission, transport, transportation, vehicle, vintage, wheel,