Ключевые слова: automotive, background, bike, business, circle, cog, cogwheel, communication, concept, construction, cooperation, design, element, engine, engineer, engineering, equipment, factory, gear, gears, industrial, industry, isolated, machine, machinery, mechanic, mechanical, mechanism, metal, metallic, motion, motorcycle, part, power, replace, round, sign, silver, steel, symbol, team, teamwork, technical, technology, transmission, wheel, white, work,