police patrol; patrol officer; (old) police officer

(theater etc) to tour; to be on tour; to give itinerant performances (abbr. for 巡迴演出|巡回演出[xun2 hui2 yan3 chu1])

to go around; to roam; to tour

(army, police) patrol

to inspect (a site); (of a dignitary) to visit; to go on an inspection tour; to survey (a scene); to scan with one's eyes