名词
中文翻译：未知
同义词：
['unknowing', 'unaware', 'unsuspected']
例句：
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1.The child was unknowingly left alone in the dark room.
孩子在黑暗的房间中被无意中留了下来。
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2. The scientist was unaware of the dangers involved in the experiment.
科学家对实验中的危险一无所知。
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3.The thief was unsuspected by the police.
警察没有料到小偷会逃跑。