Thus, although the winter sea-ice cover might decrease, the surface waters would remain cold enough so that the decrease would not be excessive.

因此，虽然冬季海冰覆盖面积可能减少，但表层水将足够冰冷，因此海冰覆盖面积不会减少太多。

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In winter, it is completely covered with sea ice.

在冬天，它完全被海冰覆盖。

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Arctic sea ice usually melts in spring and summer, then grows in winter.

北极的海冰通常在春天和夏天融化，然后在冬天形成。

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Using spacecraft data to make an Arctic-wide assessment of sea ice thickness , a University College London team found the 2008 winter maximum to be about 10% (26cm) below the 2002-2008 average.

BBC: Arctic team targets key ice data