密歇根大学的研究生CeliaChurchill说：“我们有一个很好的想法，那就是漂浮泡泡蜗牛由生活在海底的底栖蜗牛进化而来”。
University of Michigan graduate student Celia Churchill said: 'We had a pretty good idea that that janthinids evolved from snails that live on the sea floor.
密歇根大学的研究生CeliaChurchill说：“我们有一个很好的想法，那就是漂浮泡泡蜗牛由生活在海底的底栖蜗牛进化而来”。
University of Michigan graduate student Celia Churchill said: 'We had a pretty good idea that that janthinids evolved from snails that live on the sea floor.
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