英国计划于9月7日进行一次重大紧急警报测试, The UK plans a major emergency alert test on September 7, vibrating phones with a siren sound.

联合王国将于9月7日进行一次重大的紧急警报测试,这是该国历史上规模最大的公共安全演习之一。 The UK will conduct a major emergency alert test on September 7, described as one of the largest public safety exercises in the country's history. 4G和5G网络上的移动电话将振动并发出警报声,至多10秒。 Mobile phones on 4G and 5G networks will vibrate and emit a siren sound for up to 10 seconds. 该系统一直被用于真正的紧急情况,如严重风暴和未爆炸炸弹警报。 The system has been used in real emergencies, such as severe storms and unexploded bomb alerts. 测试旨在确保该系统在今后的紧急情况下有效发挥作用。 The test aims to ensure the system works effectively in future emergencies.