名词
中文翻译：群体警报
同义词：
['group alert', 'group warning']
例句：
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1.The group alarm was triggered by a sudden drop in temperature.
由于温度突然下降，触发了群体警报。
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2.She set off the group alarm to warn everyone of the impending storm.
她启动了群体警报，警告大家即将到来的暴风雨。
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3.The group alarm went off as soon as they entered the building.
他们一进入大楼，群体警报就响了。