动词
中文翻译：警告
同义词：
['alert', 'warn', 'caution']
例句：
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1. The police ALERTed the public about the imminent danger.
警方警告公众有关即将到来的危险。
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2. She ALERTed me to be careful when crossing the street.
她警告我过马路时要当心。
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3. The doctor ALERTed that he needed to see a specialist.
医生警告他需要看专家。