noun 下载 🔗分享 棘皮动物 An animal of the phylum Echinodermata, comprising radially symmetric, spiny-skinned marine animals including seastars, sea urchins, sea cucumbers, crinoids, and sand dollars. Examples : "During our visit to the aquarium, we learned that echinoderms, like starfish and sea urchins, have a unique radial symmetry. " 在参观水族馆时，我们了解到棘皮动物，比如海星和海胆，拥有独特的辐射对称结构。 animal biology ocean nature 与AI对话词汇游戏阅读练习
