在哥伦布发现美洲大陆之前，大洋洲无可争议地存在着一种在新大陆被驯化的红薯，它有时被用来支持 Heyerdahl 的“太平洋上的美洲印第安人”理论。

The undisputed pre-Columbian presence in Oceania of the sweet potato, which is a New World domesticate, has sometimes been used to support Heyerdahl's "American Indians in the Pacific" theories.

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当哥伦布发现美洲的时候，他站在哪里？

Where did Columbus stand when he discovered America?

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哥伦布发现美洲，可是并没有到那块新大陆上去探险。

Explore Columbus discovered America but did not explore the new continent.

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So, Columbus gets the glory of discovering America but it's up to debate if he actually did discover it.

所以，哥伦布获得了发现美洲的殊荣，但对于这个问题，人们仍然争论不休。

哥伦布的故事 - SpeakingMax英语口语达人

Columbus was the man who was attributed to having discovered America.

哥伦布被认为发现了美洲新大陆。

哥伦布的故事 - SpeakingMax英语口语达人