| 单词 | chordates |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔enterocoele〕The coelom formed from a pocketlike outgrowth of the wall of the archenteron, especially in echinoderms and chordates.肠体腔：由原肠壁的袋装生长而形成的体腔，尤其存在于棘皮动物和脊索动物中美国传统〔notochord〕A flexible rodlike structure that forms the main support of the body in the lowest chordates, such as the lancelet; a primitive backbone.脊索：细胞构成的一条纵长可弯曲的杆状结构，其作用是引导产生神经板，形成躯体的支持轴美国传统 |
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