noun 下载 🔗分享 刺胞动物,腔肠动物 Any of various invertebrate animals, such as jellyfish, hydras, sea anemones, corals and formerly sponges and ctenophores that belong to the phylum Cnidaria. Examples : "While swimming in the ocean, we saw a beautiful jellyfish, a type of cnidarian. " 在海里游泳时,我们看到了一只美丽的水母,水母是刺胞动物的一种。 animal biology ocean nature 与AI对话词汇游戏阅读练习