| 单词 | 脊索动物 |
| 释义 | 〔cephalochordate〕Any of various primitive chordate animals of the subphylum Cephalochordata, such as the lancet, that lack a true vertebral column.头索动物：头索动物亚门的一种原始脊索动物，如帆蜥鱼，无真正的脊柱〔salp〕Any of various free-swimming chordates of the genusSalpa, of warm seas, having a translucent, somewhat flattened, keglike body. 樽海鞘：温带海洋里樽海鞘属 善泳的脊索动物，有半透明、稍扁平桶状的身体 〔cephalochordate〕Chordata [chordate phylum] * see chordate Chordata [脊索动物门] * 参见 chordate〔urochordate〕A chordate marine animal of the subphylum Urochordata; a tunicate.尾索动物：尾索动物亚门的海生脊索动物；被囊动物〔chordate〕Any of numerous animals belonging to the phylum Chordata, having at some stage of development a dorsal nerve cord, a notochord, and gill slits and including all vertebrates and certain marine animals, such as the lancelets.脊索动物：包括所有的脊椎动物以及如文昌鱼之类的海洋动物的脊索动物门的大量动物中的任一个，在某些生长阶段有背部神经索、背索及鳃裂〔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〔vertebrate〕A member of the subphylum Vertebrata, a primary division of the phylum Chordata that includes the fishes, amphibians, reptiles, birds, and mammals, all of which are characterized by a segmented spinal column and a distinct, well-differentiated head.脊椎动物：脊索动物门的一个原始分支，属于脊椎动物分门的一种动物，包括鱼类、两栖动物、爬行动物、鸟类和哺乳动物，其共同特征是都有节段的脊柱和很明显的、分化的头部 |
| 随便看 |
|
学习网英语词汇栏目收词371507余条，连同派生词、复合词、词组和习语等。每个词条提供了音标、词性、释义、用法、搭配和同（近）义词等多项功能，对所收词汇进行全方位的解释和说明，内容丰富，功能全面。