It's powered by a jet of water, squirting from a siphon 它的动力来自虹吸管喷射的水流

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  1. But as night falls, it ascends up to the reefs, to look for food.
    到了晚上,它就游上来 到珊瑚礁附近寻找食物
  2. It's graceful shell contains gas filled floatation chambers,
    它那优美的外壳由充满空气的小室组成
  3. that control it's depth.
    使它可以控制深度
  4. It's powered by a jet of water, squirting from a siphon
    它的动力来自虹吸管喷射的水流
  5. but it travels shell first, so it can't see exactly where it's going.
    由于它是倒着游 所以它自己也很难看清楚自己要去哪里
  6. It's nearest living relatives are squid and octopus which, over evolutionary time, have both lost their shells
    它是已经进化到已经没有壳的章鱼和乌贼的近亲
  7. and the octopus has become one of the nautilus' major predators.
    章鱼也已经成为了猎食鹦鹉螺的主要天敌

来自《行星地球 第一季 第十一集 Planet Earth S01E11 海洋深处》第 202 行

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