名词
中文翻译：首都
同义词：
['main', 'pivot', 'root']
例句：
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1.The capital of the country is located in the center of the city.
该国的首都位于市中心。
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2.The company's main source of revenue comes from its sales in the capital.
该公司的主要收入来源是其首都的销售。
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3.The new law will have a significant impact on the capital's economy.
新法律将对首都的经济产生重大影响。