apterium / æpˈtɪər i əm /

📖毕业后词汇隐蔽性隐蔽性极强隐蔽性强隐蔽性好

apterium 的定义

n. 名词 noun

plural ap·te·ri·a [ap-teer-ee-uh]. /æpˈtɪər i ə/. Ornithology.

  1. one of the featherless portions of the skin of a bird.

更多apterium例句

  1. But, the male loses most of the down feathers of the ventral apterium.