- that control it's depth.
使它可以控制深度 - 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 - 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 - 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 - 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 - It's a master of disguise.
它是伪装大师 - The nautilus keeps well clear of them.
鹦鹉螺必须远离它们
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
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evolutionary
relatives
octopus
squid
shells
living
both
which
lost
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it's
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are
over
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