noun 下载 🔗分享 脊索动物,脊椎动物 A member of the phylum Chordata; numerous animals having a notochord at some stage of their development; in vertebrates this develops into the spine Examples : "Humans, like fish, birds, and reptiles, are all classified as chordates because they possess a notochord at some point in their development. " 像鱼类、鸟类和爬行动物一样,人类也被归类为脊索动物,因为它们在发育的某个阶段都具有脊索,脊索动物包括所有脊椎动物。 animal biology organism anatomy 与AI对话词汇游戏阅读练习