noun🔗Share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."While visiting the aquarium, my daughter learned that a starfish is an echinoderm with five arms and a spiny surface. "参观水族馆时，我女儿了解到海星是一种棘皮动物，有五个腕足，表面多刺。animalbiologyoceannaturescienceChat with AIVocabulary GamePractice Reading
