The city raised a red alert on Monday.

周一该市发布了红色预警。

It's the Cold War and Americans are on red alert.

冷战时期 所有美国人都保持高度戒备。

Portugal civil defense authorities have placed most of the nation on red alert.

葡萄牙民防部门对大部分地区发布了红色警报。

Most of the country is set to remain on red alert until the end of Sunday.

本周末之前，葡萄牙大部分地区都保持在红色预警。

Sure enough, the town is put on red alert that the river is about to break in the middle of the night.

显然 小镇发布红色预警通知人们河流将在午夜解冻。

The civil emergency authorities have put the country on red alert and ordered that people remained outside tall buildings until further notice.

民事紧急部门已将该国列于红色预警之列，命令人们在得到通知之前不要进入高层建筑。

The ministry says 27 out of 31 provinces are on red alert for a high risk of infection, while the other four are on yellow alert.

卫生部表示，31个省中有27个省处于感染高风险的红色警戒状态，其他4个省处于黄色警戒状态。

Rome and other cities across Italy are on red alert as the country is bracing for an intense heatwave that meteorologists say is likely to break records.

意大利正在迎接一场气象学家称可能会打破纪录的强烈热浪，罗马以及意大利的其他城市都进入了红色警戒状态。

Meteorological authorities in Beijing maintained a red alert for rainstorms on Monday morning due to forecasts of torrential rain between 10am Monday and 8am Tuesday, and warned that small- and medium-sized rivers could experience flash floods and landslides.

由于预测周一上午 10 点至周二上午 8 点之间会有暴雨，北京气象部门周一上午维持了暴雨红色预警，并警告（居民），中小型河流可能会遭遇山洪和滑坡。