Lowered sea levels exposed the shallow continental shelf beneath the Bering Sea.

下降了的海平面使白令海底的浅大陆架露了出来。

《柯林斯英汉双解大词典》

He theorized that with the use of watercraft, people gradually colonized unglaciated refuges and areas along the continental shelf exposed by the lower sea level.

他的理论是，随着船只的使用，人们沿着因海平面下降而暴露的大陆架逐渐移居到未冻结成冰的区域。

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Research now indicates that sizable areas of southeastern Alaska along the inner continental shelf were not covered by ice toward the end of the last Ice Age.

现在的研究表明，在最后一次冰河时期的尾声阶段，阿拉斯加东南部沿岸的内大陆架的相当大的区域并未被冰覆盖。

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"There are billions of barrels of oil in the Outer Continental Shelf,".

VOA: standard.2009.05.23

Russia claims a larger slice, saying its continental shelf extends from Siberia to the North Pole.

ECONOMIST: Politics this week

The westbound shipping lane currently ends at the relatively shallow continental shelf, where ships disperse.

MSN: Feds to reroute SF Bay ships to protect whales

More domestic supply, which means quick assurance that Congress will open gas-rich acreage on the Outer Continental Shelf.

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