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单词 pinna
释义
pin·na (pĭnə)
n. pl. pin·nae (pĭnē) or pin·nas
1. Botany A leaflet or primary division of a pinnately compound leaf.
2. Zoology A feather, wing, fin, or similar appendage.
3. Anatomy See auricle.

[Latin, feather; see pet- in the Appendix of Indo-European roots.]

pinnal adj.
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