a permanent hole in the sea ice, kept open throughout the winter by strong ocean currents. 冰间湖是结冰的海洋上永久性的洞孔 因为有强大的洋流使它们冬天也不会冰封

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hole permanent throughout open ocean currents strong ice sea kept in winter the by a
  1. instead of flying south to warmer climes.
    而一直坚守在这里经受着北方寒冬的考验
  2. Flocks 40,000 strong sweep across the frozen wastes.
    4万只绒鸭飞越这一片冰天雪地的荒野
  3. They all have the same goal, a polynya,
    它们都有相同的目标--冰间湖（冰穴）
  4. a permanent hole in the sea ice, kept open throughout the winter by strong ocean currents.
    冰间湖是结冰的海洋上永久性的洞孔 因为有强大的洋流使它们冬天也不会冰封
  5. This unusual duck pond provides an overnight sanctuary
    这个不同寻常的水池是过夜的庇护所
  6. and, when day breaks, a rare chance to feed.
    而且到了白天还有难得的进食机会
  7. Just 10 metres beneath the ice,
    就在离冰面10米以下的海底上

来自《行星地球 第一季 第六集 Planet Earth S01E06 冰雪世界》第 139 行

Walden21
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