常见例句用作名词 (n.)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。 返回 planula