zhè ge / xiǎo qū / ān zhuāng / le / xīn / de / fáng kōng / jǐng bào qì / měi yuè / cè shì / yī cì

这个小区安装了新的防空警报器，每月测试一次。

This residential area has installed a new air-raid siren, which is tested once a month.