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.
在4月就已发现这些冰向南向西涌进了波弗特海和楚科奇海。
The ice was flushed southwards and westward into the Beaufort and Chukchi seas, as noted in April.
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