居民区有保安巡逻，比较安全。
There are security patrols in this district, so it is fairly safe.
红外对射围墙防护。24小时保安巡逻。
Infrared radiation protection wall. 24-hour security patrol.
保安服务：包括保安门卫服务，保安守护服务和保安巡逻服务。
Security and Protection service: including doorkeeper, guardianship and patrolling security services.
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