noun 下载 🔗分享 桡足动物,桡足类。 Any of very many small crustaceans of the subclass Copepoda, that are widely distributed and ecologically important. Examples : ""The scientist used a fine net to collect the copepods from the ocean water for her research on marine food chains." " 那位科学家用精密的网从海水中收集桡足动物,用于她对海洋食物链的研究。 animal organism biology ocean ecology science 与AI对话词汇游戏阅读练习