the flat ciliated free-swimming larva of hydrozoan coelenterates
造句
用作名詞(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. 在海蜇成體或水母體階段，它們通過將精子和卵于釋放到水中形成浮浪幼體而進行有性繁殖。
近義反義詞
plans
plan
plan for attack
planning theory
planocompressed
planform fillet
planned markets
planstic tunnel
Planck function
planned balance
planning factor
planum sternale