pa·trol·man /pəˈtrolmən/
  巡視者,巡邏者,巡邏警官
  Pa·trol·man n.; pl. Patrolmen  One who patrols; a watchman; especially, a policeman who patrols a particular precinct of a town or city.
  ◄ ►
  patrolman
       n : a policeman who patrols a given region [syn: flatfoot]