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单词 podion
释义 podion Zool.|ˈpɒdɪɒn|
Pl. podia.
[mod.L., a. Gr. πόδιον: 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 tense and rigid.
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