名词
中文翻译：统治者
同义词：
['government official', 'executive', 'ruler']
例句：
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1. The prime minister is the head of the government.
首相是政府的首脑。
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2. The president is the head of state in this country.
总统是国家元首。
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3. The mayor is responsible for the city's administration.
市长负责城市管理。