Ключевые слова: automobile, automotive, background, bonding, cog, cogwheel, concept, connect, connection, dark, design, detail, engine, engineering, equipment, gear, gearbox, gearing, gears, industrial, industry, interlocked, interlocking, machine, machinery, macro, mechanical, mechanics, mechanism, metal, metallic, metaphor, new, objects, part, power, precision, rotation, steel, technical, technology, together, train, transmission, wheel, wheels,