动词短语
中文翻译：对
同义词：
['puzzle over', 'puzzle at', 'be perplexed by']
例句：
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1.I'm puzzled by the reason behind this sudden change in plans.
我对计划突然改变的原因感到困惑。
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2. The mystery of the disappearance of the lost treasure has puzzled experts for years.
失踪的宝藏之谜多年来一直让专家们困惑不解。
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3. The scientist puzzled over the results of his experiments, unable to find a satisfactory explanation.
科学家对他的实验结果感到困惑，无法找到令人满意的解释。