缩写
中文翻译：Unknown
同义词：
['Professor', 'Doctor', 'Dr.']
例句：
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1. He is a Professor of Chemistry at the University of Oxford.
他在牛津大学担任化学教授。
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2. She received her PhD in Physics from MIT.
她从麻省理工学院获得了物理学博士学位。
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3.The doctor advised him to rest for a few days before starting his new job.
医生建议他休息几天再开始新工作。