These birds are able to survive the peril of the Arctic winter.

这些鸟能在北极的严冬中生存。

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American scientists say ice covering the Arctic Sea continued to shrink last winter.

美国科学家称，覆盖北冰洋的冰面去年冬天继续缩减。

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American scientists say ice covering the Arctic Sea continued to shrink last winter.

美国科学家称，覆盖北冰洋的冰面去年冬天继续缩减。

youdao