noun 下载 🔗分享 水螅纲动物,水螅虫 Any of many colonial coelenterates, of the class Hydrozoa, including the hydras, hydroids, hydrocorals, and siphonophores. Examples : "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。 organism animal biology ocean nature 与AI对话词汇游戏阅读练习