marine or freshwater animals that form colonies of zooids
双语例句
Any of various small aquatic animals of the phylum Bryozoa that reproduce by budding and form mosslike or branching colonies permanently attached to stones or seaweed. 苔藓虫，苔藓虫门的小型水生动物，通过芽生繁殖，形成象苔藓一样的分支群体，一直附着在石头或海草上。
