and the whales gorge themselves round the clock. 鲸鱼昼夜不停地在此进食

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  1. sometimes diving to depths of forty meters to reach them.
    有时它们潜到40米深
  2. A large humpback eats three tons of krill a day.
    一头成年座头鲸每天能吃掉3吨磷虾
  3. The polar seas in summer are the most productive on the planet
    夏季的极地海域是地球上最多产的
  4. and the whales gorge themselves round the clock.
    鲸鱼昼夜不停地在此进食
  5. The fat reserves they lay down now
    它们现在积累的脂肪
  6. will keep them alive during the year to come
    可以支持到明年再来
  7. but it may not always be this way.
    不过也可能不会再来了

来自《行星地球 第一季 第九集 Planet Earth S01E09 海洋》第 263 行

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