形容词
中文翻译：最高警戒状态同义词
同义词：
['maximum alert', 'utmost vigilance']
例句：
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1. The military has been on highest alert since the terrorist attack.
自恐怖袭击以来，军队一直处于最高警戒状态。
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2. We need to be on highest alert for any potential threats.
我们需要对任何潜在威胁保持最高警戒状态。
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3. The police are on highest alert in the city center due to the recent bombings.
由于最近发生的炸弹袭击，警方在市中心保持最高警戒状态。