ARO

例句：

1. 1. The ARO is a crucial part of the military's communication system.
   ARO是军队通信系统的关键部分。
2. 2. The ARO is responsible for monitoring and controlling the airspace above the city.
   ARO负责监控和控制城市上空的空域。
3. 3. The ARO was designed to improve safety and efficiency in aviation operations.
   ARO的设计旨在提高航空操作的安全性和效率。