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- testaceous echinoderms. 有介壳的棘皮动物
- It is called an " Echinoderm", which means it is spiny-skinned. 被称为“棘皮类动物”，这意味着牠们具有多刺的皮肤。
- Any aquatic mollusk, crustacean, or echinoderm that has a shell. 有壳的水生软体动物、甲壳动物或棘皮动物的统称。
- 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
- The area around the anus in certain invertebrates,such as echinoderms. 某些无脊椎动物的肛门周围部分，如棘皮动物。
- Among echinoderms, sea urchins and sea cucumbers are locally popular. 棘皮动物中球海胆和海参在某些地区很受欢迎。
- I am informed by Mr. F. Smith that the male ants of several species are black, the females being testaceous. 史密斯先生告诉过我,有些种类的公蚂蚁是黑色的,母蚂蚁是带壳的。图解带贝壳的
- 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
- 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
- Sea stars, also known as starfish, are echinoderms belonging to the class Asteroidea. 海星是棘皮动物下的一个纲的动物的名称。
- 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
- 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
- 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
- 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radial areas on the undersurface of the starfish and similar echinoderms, from which the tube feet are protruded and withdrawn.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
- The echinoderms can destroy the kelp beds if their natural predators don't keep them in check. 棘皮动物能毁坏海带床假如它们的天敌不能保持它们受控制的时候。
- The echinoderm biomass in the fine sediments area in higher, the species diversity in the coarse sediments area is higher. 细颗粒沉积区中生物量较高,而粗颗粒沉积区种类多样性较高。
- The spiny echinoderms, a potential peril to swimmers stepping on rocks, feast on kelp, which is dwindling along California's coastline. 做为一种多刺的棘皮类动物，海胆对于那些把脚放在暗礁上的海滨游泳者构成了潜在的威胁，这种动物通常以大型海藻为食物，因此海藻在加州沿海地区正呈出日渐减少的趋势。
- 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radial areas on the undersurface of the starfish and similar echinoderms,from which the tube feet are protruded and withdrawn.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。
- These characteristics are shared by brachiopods and pterobranchs (a hemichordate group) as well as by echinoderms, protochordates, amphioxus, and vertebrates. 脊索动物的祖先可能类似尾索动物的幼体，后向两个方向发展，一是经过变态，成体为固着生活，具鳃裂作为取食和呼吸器官；
- Any of various thin, circular echinoderms of the class Echinoidea, especially Echinarachnius parma, of sandy ocean bottoms of the northern Atlantic and Pacific. 沙钱，饼海胆：任一种海胆纲的瘦且圆的棘皮类动物，尤指外剑虱目，生活于北大西洋和太平洋沙质洋底
