传统观点认为，最初定居美洲的古人类大约在一万一千年前跨越西伯利亚与阿拉斯加州之间的大陆桥抵达美洲。

The traditional view is that the continent's early settlers arrived around 11, 000 years ago, by crossing a land bridge between Siberia and Alaska.

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传统观点认为，最初定居美洲的古人类大约在一万一千年前跨越西伯利亚与阿拉斯加州之间的大陆桥抵达美洲。

The traditional view is that the continent's early settlers arrived around 11,000 years ago, by crossing a land bridge between Siberia and Alaska.

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他们被认为是在3万多年以前从亚洲跨越一座陆桥来到美洲的。

It is thought that they arrived more than 30,000 years ago by crossing a land bridge from Asia to America.

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