Ключевые слова: art, background, black, blade, bright, bulgarian, business, circle, circular, construction, cut, disc, disk, electric, engineering, equipment, factory, fire, flash, green, grinder, hand, human, industrial, industry, iron, jeans, light, machine, male, man, manual, manufacturing, metal, nature, person, pipe, power, production, protection, safety, saw, spark, steel, summer, technology, tool, wheel, work, worker,