Ключевые слова: blade, caution, circular, company, construction, craftsman, cut, disc, electric, engine, engineering, equipment, fabric, factory, flash, gloves, grind, grinder, grinding, hand, heavy, industrial, industry, iron, job, light, machine, man, manual, manufacture, manufacturing, mechanic, metal, person, prefabricate, protection, safety, spark, speed, spin, steel, technical, technology, tool, trained, turning, work, worker, workplace, workshop,