详细释义
Noun:
-
the flat ciliated free-swimming larva of hydrozoan coelenterates
双语例句
- 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段，它们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。
用作名词 (n.)
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