哥伦布美国佐治亚州西部城市，位于彻特胡奇河岸、亚特兰大西南偏南，1828年在柯瑞克镇的基础上建立，是一个内陆港和重要的工业中心。

Columbus: a city of western Georgia on the chattahoochee river south-southwest of Atlanta. Settled in 1828 on the site of a creek village it is a port of entry and major industrial center.

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据说哥伦布发现了美国。

It is generally said that Columbus discovered America.

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利玛窦非常自信，他将他的探索命名为“哥伦布行动”，并将他的目标锁定在拥有30万读者的美国。

Ricci is so confident that he has christened his quest "Operation Columbus" and has set his sights on discovering an American readership of 300,000.

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