Ключевые слова: accident, background, blue, bucket, building, careful, caution, clean, cleaner, cleanup, closeup, danger, fall, floor, indoor, industrial, information, inside, interior, isolated, janitor, janitorial, job, lobby, maintenance, message, mop, notice, people, person, plastic, precaution, prevention, risk, safety, service, sign, signal, slip, standing, sweeping, symbol, tool, warning, water, wet, work, workplace, yellow,