副词
中文翻译：警觉地
同义词：
['carefully', 'cautiously', 'vigilantly']
例句：
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1. She was alertly watching the traffic lights.
她警觉地观察着交通信号灯。
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2. The driver was alertly aware of the dangers ahead.
司机警觉地意识到前方的危险。
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3. The team members were alertly ready for action.
团队成员警觉地准备行动。