I first came to North American in prehistoric times when I crossed the Bering Strait land bridge from Eurasia.
在史前时期，我从欧亚大陆穿越白令海峡、走过陆地、桥第一次来到了北美。
The second wave took them to Tierra del Fuego, the farthest scrap of land that can be walked to from Africa (at least during ice ages, when the Bering Strait can be traversed).
第二波将他们带到火地岛，一片从非洲可以步行到达的(至少是在可以横越白令海峡的冰河世纪)最远的荒地。
Scientists believe that these settlers crossed the Bering Strait in the Arctic to America by means of a land bridge which existed in prehistoric times.
科学家们认为这些定居者穿过白令海峡在北极到美国的一种方法中存在的陆地桥在史前时期。
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