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In scyphozoan jellyfish, the free-swimming medusa form is the dominant stage, with the sessile polyp form found only during larval development.

自由游泳的水母见于各海常见的沿海岸线漂流的盘形动物(甲壳动物)。

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In the adult, or medusa stage of a jellyfish, they can reproduce sexually by releasing sperm and eggs into the water, forming a planula.

在海蜇成体或水母体阶通过将精子和卵于释放到水中形成浮浪幼体而进行有性繁殖。

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Eventually the polyps begin to bud, splitting off into an ephyra, or immature jelly, which then develops into a medusa, the form we usually recognize as a jellyfish.

后,珊瑚虫开始萌芽,分裂成蝶状体,或者水母体发育成水母体,我们通常认为的水母的外形。

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