短语
中文翻译：高度警惕
同义词：
['on high alert', 'on full alert', 'on standby例句：1. The police were on red alert after the bombing.（在炸弹袭击后，警方处于高度警惕状态。）']
例句：
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1. The police were on red alert after the bombing.
在炸弹袭击后，警方处于高度警惕状态。
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2.She was on red alert for a week because of the storm.
由于暴风雨，她处于高度警惕状态一周。
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3. We are on red alert until further notice.
我们将继续处于高度警惕状态，直到另行通知。