bǎo / ān / tuán / zài / yè / jiān / xún / luó / fáng / zhǐ / dào / fěi / jìn / rù / chéng / zhèn

保安团在夜间巡逻，防止盗匪进入城镇。

The security group patrolled at night to prevent bandits from entering the town.