But was there one major wave of migration across the Bering Strait into the Americas, or several?
但是有没有一次或几次大移民浪潮是穿过白令海峡到达美洲的呢？
From this evidence it was deduced that there had been three major waves of migration across the Bering Strait.
从这个证据可以推断，横跨白令海峡的大型移民潮曾经有过三次。
The Bering Strait separates Asia and America .
白令海峡隔开了亚洲和美洲。
Alaska is just across the Bering Strait from Russia.
阿拉斯加穿过白令海峡与俄罗斯相连。
The bering strait parts North America from Asia.
白令海峡把北美洲和亚洲分开。
The Chukchi Sea lies between Alaska and Russia just north of the Bering Strait.
楚科奇海位于阿拉斯加和俄国之间的白令海峡北部。
Cowfish with no teeth extincted 27 years later since it was found (Bering Strait, 1854).
无齿海牛是在被发现27年后便遭灭绝(1854年于白令海峡)。
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 building britons called himself "from the Suez Canal to the far east the bering strait" a most exquisite architecture.
这座建筑英国人曾自诩为“从苏伊士运河到远东白令海峡”的一座最为讲究的建筑。
The blind variety of legless lizard likely originated in the Americas, but some 55 million years ago they slithered across the Bering Strait and into Asia.
这种无视力，无脚的蜥蜴可能源于美洲，但其在五千五百万年前跨越白令海峡到达亚洲。
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。
Scientists believe that these settlers crocced the Bering Strait in the Arctic to America by means of a land bridge which existed in prehistoric times.
科学家们认为这些迁居者通过一条史前时期曾经存在的大陆桥穿越北极地区的白令海峡到达美洲。
Its modern distribution suggests that Japanese sailors were the first people to reach the Americas, millennia before Siberians wandered across the Bering Strait.
其现代分布表明，日本船员首先到达美洲，比西伯利亚人越过白令海峡早了一千年。
Likewise, a study published in January 2010 concluded that, over the past 100,000 years, rising and falling ocean levels alternately opened and closed the Bering Strait.
同样的，据2010年1月发表的一篇研究推测，在过去10万年间，海平面的涨落，使白令海峡交替开合。
Likewise, a study published in January 2010 concluded that, over the past 100, 000 years, rising and falling ocean levels alternately opened and closed the Bering Strait.
同样的，据2010年1月发表的一篇研究推测，在过去10万年间，海平面的涨落，使白令海峡交替开合。
At the same time, warm Pacific Ocean water is pulsing through the Bering Strait into the Arctic basin, helping melt a large area of sea ice between Alaska and eastern Siberia.
同时，温暖的太平洋的海水正在漫过白令海峡涌向北冰洋流域，这使阿拉斯加和东西伯利亚间的海冰融化得更多。
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。
This is because the oldest Y-chromosome lineage in the Americas originated in Central Asia 15,000-20,000 years ago, and then migrated to the northeast, across the Bering Strait.
这是因为，在美洲，最老的Y染色体血统起源于亚洲中部于15,000至20,000年以前，然后迁移到东北部跨过白令海峡。
'Here you have an animal that is supposed to live in the Pacific and because the ice in the Arctic is melting, it managed to get through this corridor near the Bering Strait,' he said.
“这头栖息地在太平洋的生物有可能是在北冰洋中的冰雪融化时，通过白令海峡的，”他说。
'Here you have an animal that is supposed to live in the Pacific and because the ice in the Arctic is melting, it managed to get through this corridor near the Bering Strait,' he said.
“这头栖息地在太平洋的生物有可能是在北冰洋中的冰雪融化时，通过白令海峡的，”他说。
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