noun🔗Share水螅纲动物，水螅虫 Any of many colonial coelenterates, of the class Hydrozoa, including the hydras, hydroids, hydrocorals, and siphonophores."While swimming, the marine biologist pointed out a colorful, branching hydrozoan attached to a rock, explaining that it was a colony of many tiny, individual animals working together. "游泳时，那位海洋生物学家指着一块岩石上附着的一个色彩鲜艳、呈分支状的水螅纲动物（水螅虫），解释说那是由许多微小的、独立的动物共同组成的群体。organismanimalbiologyoceannatureChat with AIVocabulary GamePractice Reading
