哥伦布获得了发现美洲的殊荣，但对于他是否真的发现美洲，人们仍然争论不休。

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

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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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发现美洲是一件大事。

The discovery of American was a great event.

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You can see in the New World with maize being important how America has become a corn dominated society, even though it's still true that we raise wheat, we raise other things in the United States, and we can import different foods, corn has become an incredibly important constituent of the diet in the U.S.

你能发现玉米在美洲大陆的重要性,那美洲是怎样变成主食玉米的社会的呢,尽管我们仍然种植小麦,在美国也种植其他粮食,而且我们能进口各种不同食物,但是玉米还是变成了,美国人食谱中不可代替的部分

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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

There's also some belief that the Vikings discovered America 300 years earlier.

也有人认为，维京人在那之前三百年就发现了美洲。

哥伦布的故事 - SpeakingMax英语口语达人