名词
中文翻译：授权书
同义词：
['certificate of authority', 'authority letter', 'authorization']
例句：
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1. The company issued a letter of authority to the new manager.
公司给新任经理颁发了授权书。
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2. The doctor gave her a letter of authority for the surgery.
医生给她开了手术的授权书。
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3. The police officer handed him a copy of the letter of authority.
警察递给他一份授权书副本。