单词 podion 释义 ‖ podion Zool.|pdn|Pl. podia.[mod.L., a. Gr. : see podium.]One of the tube-feet of an echinoderm.1900E. R. Lankester Treat. Zool. iii. 291 Water from the reservoir or ampulla is driven into the podion, and the tube-foot is thus rendered...