单词wing covert
na.: (鸟)覆羽网络: 廓羽
覆翼羽
(鸟)覆羽,羽茎小毛
Wing covert feather, flight, Institute of Zoology and Zoological Museum, University of Hamburg.
翅膀隐羽,飞行用,汉堡大学动物学会和动物博物馆。