“bivium”的英英意思

单词	bivium
释义	‖ bivium Phys.|ˈbɪvɪəm| [a. L. bivium a place where two ways meet; see prec.] The two hinder ambulacra of Echinoderms. 1870[see trivium 2].1877Huxley Anat. Inv. An. ix. 570 It is possible in any of the Echinidea, to separate the three anterior ambulacra, as the trivium, from the two posterior, the bivium; and in the fossil genus Dysaster, this separation of the ambulacra into trivium and bivium exists naturally.

　

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