炸弹爆炸之后，当地医院一直处于戒备状态。

Following the bomb blast, local hospitals have been put on red alert.

《牛津词典》

战士对敌人的攻击处于戒备状态。

The soldiers are on the alert against the enemy's attack.

youdao

全国正处于戒备状态。

The whole country is in a state of alert.

youdao

这些网络始终处于戒备状态，搜索警报迹象。

These networks are always on the alert for warning signs.

youdao

5 000多名士兵已处于（全面）戒备状态。

More than 5 000 troops have been placed on (full) alert.

《牛津词典》

5 000多名士兵已处于（全面）戒备状态。

More than 5 000 troops have been placed on (full) alert.

《牛津词典》