Ключевые слова: at the edge of, barb, barbed wire, base, boundary, camping, clip art, closed, closeup, defending, entrance, fence, forbidden, home ownership, industry, invade, iron metal, isolated, metal, military, moving up, obstacle course, old, pattern, prison, private sign, protection, razor, rusty, security, sharp, single word no, steel, striped, tied knot, toughness, trespassing, wire,