Ключевые слова: abstract, accident, background, bad, building, concrete, construction, cut, cylinder, dirty, disaster, equipment, gas, ground, hole, industrial, industry, iron, leak, line, maintenance, material, metal, old, one, patch, pipe, pipeline, piping, plastic, plumber, plumbing, pollution, problem, repair, replacement, rust, rusty, seam, shadow, steel, street, summer, technology, texture, tube, water, welding, work,