Some bills would require schools to put in place technology like panic alerts, security cameras and emergency communications systems.
有些法案要求学校安装恐慌警报、安全摄像头和紧急通信系统等。
Emergency communication system
原声例句
VOA Special 2023年4月合集
英语百科
Emergency communication system
An Emergency communication system (ECS) is any system (typically, computer-based) that is organized for the primary purpose of supporting one-way and two-way communication of emergency messages between both individuals and groups of individuals. These systems are commonly designed to integrate the cross-communication of messages between a variety of communication technologies, forming a unified communication system intended to optimize communications during emergencies.
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