名词
中文翻译：首席
同义词：
['head', 'chieftain', 'leader']
例句：
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1. The chief of the police department is responsible for maintaining order in the city.
警察局长负责维护城市秩序。
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2. She was appointed as the chief engineer of the company.
她被任命为公司的总工程师。
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3. The chief executive officer is in charge of all business activities within the company.
首席执行官负责公司内的所有商务活动。