单词 apterium 释义 ‖ apterium Ornith.|ptrm|Pl. -ia.[mod.L. (Nitzsch 1833), f. Gr. ἀ- priv. (a- 14) + feather.]Each of the featherless spaces on the skin of a bird intervening between the feathered tracts or pteryl.1867W. S. Dallas tr. Nitzsch's Pteryl...