| 单词 | echinoderms |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔ambulacrum〕One of the five radial areas on the undersurface of the starfish and similar echinoderms, from which the tube feet are protruded and withdrawn.步带：海星和类似棘皮动物底部五个辐射状排列部位中的一个，触手从这里进行伸缩美国传统〔echinoderm〕Echinoderms like the starfish live on the sea floor.像海星这样的棘皮动物生活在海底。剑桥高阶〔enterocoele〕The coelom formed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〔holothurian〕Any of various echinoderms of the class Holothuroidea, which includes the sea cucumbers.海参类动物：海参纲的棘皮动物，包括海参美国传统〔madreporite〕A perforated platelike structure in most echinoderms that forms the intake for their water-vascular systems.筛：在大多数棘皮动物身上的一个多孔板状的结构，构成它们水管系的进口美国传统〔periproct〕The area around the anus in certain invertebrates, such as echinoderms.围肛部：某些无脊椎动物肛门的周围部分，如棘皮动物美国传统〔sea cucumber〕Any of various cucumber-shaped echinoderms of the class Holothuroidea, having a flexible body with tentacles surrounding the mouth.海参：任一种海参似胡瓜状的棘皮动物，长有灵活的肢体，嘴周围生满触角美国传统〔sea urchin〕Any of various echinoderms of the class Echinoidea, having a soft body enclosed in a round, symmetrical, calcareous shell covered with long spines.海胆：任一种棘皮纲的棘皮动物，具有被圆形对称的螺旋状贝壳包含的柔软躯体，贝壳表面布满棘刺美国传统〔stone canal〕A calcareous duct in echinoderms that leads from the madreporite to a ring-shaped canal around the mouth.石管：棘皮动物体内由筛板通向口部附近环状管道的钙质的导管美国传统〔water-vascular system〕A system of water-filled canals derived from the coelom that connects the tube feet of echinoderms.水管系统：由连接棘皮动物管状足的体腔发展而来的充满水的管状系统美国传统 |
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