adj. proglacial
由于气候变化，北冰洋夏季的冰覆盖量现在仅是50年前的一半。
Because of climate change, the Arctic Ocean's summer ice cover is now half of what it was 50 years ago.
他希望，在楚科奇海域能钻探出几千年前的岩心，为了解海洋水流和冰之间相互作用提供详实的历史资料。
He hopes to drill cores that date back thousands of years at the Chukchi Sea margin, providing a detailed history of interaction between oceanic currents and ice.
49岁的布兰德从14岁就开始打猎，他说，大约20年前，当冬天海上的冰变得太薄，不再能够承受狗拉雪橇以后，猎海豹不再是这里一种持续的生活方式。
Brandt, 49, has been a hunter since age 14, and said roughly 20 years ago, when winter sea ice became too thin to support dogsleds, seal hunting ceased to be a sustainable way of life here.
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