单词 bivium 释义 ‖ bivium Phys.|bvm|[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...