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单词 脊索动物
例句 DEFINITIVE EXAMPLES 权威例句〔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,无真正的脊柱美国传统〔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美国传统〔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;被囊动物美国传统
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