Rotula

[rɔtjulә]

解释:

(n.) The patella, or kneepan.

塞西尔手打

解释:

n. the patella or knee-pan: one of the five radial pieces in the dentary apparatus of the sea-urchin.—adjs. Rot′ūlar; Rot′ūliform.

埃尔莎整理