/pə'trəʊl; pə`trol/
v (-ll-) [I, Tn] go round (a town, an area, etc) to check that all is secure and orderly or to look for wrongdoers, an enemy or people who need help 在（某城、地带等）巡逻; 巡查
*The army regularly patrol (along) the border. 军队按时沿边界巡逻.
* Police patrol the streets at night. 警察晚间在街道上巡逻.

n
1 action of patrolling 巡逻; 巡查
*carry out a patrol 执行巡逻任务
* The army make hourly patrols of the area. 军队在该地带每小时巡逻一次.
* The navy are maintaining a 24-hour air and sea patrol, eg in order to find survivors from a ship that has sunk. 海军正在进行24小时海空巡逻（如寻找遇难船只上的幸存者）.
2 person, group of people, vehicle, ship or aircraft that patrols an area 巡逻者; 巡逻队; 巡逻车; 巡逻艇; 巡逻机
*a naval, army, police patrol 海军、陆军、警察的巡逻人员
* [attrib 作定语] a police pa`trol car 警察巡逻车.
3 group of (usu)
6 members of a Scout troop or a Girl Guide company 童子军小队（通常为6人）.
4 (idm 习语) on patrol patrolling a particular area 在巡逻中
*Terrorists attacked two soldiers on patrol. 恐怖分子袭击了两名正在巡逻的士兵.