flight feather

US /ˈflaɪt ˌfeð.ər/
UK /ˈflaɪt ˌfeð.ər/
"flight feather" picture
1.

飛羽, 翼羽

one of the large, stiff, and asymmetrical feathers on the wing or tail of a bird, essential for flight

:
The eagle soared high, its powerful wings propelled by strong flight feathers.
老鷹高高翱翔,其強勁的翅膀由堅固的飛羽推動。
Scientists study the structure of flight feathers to understand avian aerodynamics.
科學家研究飛羽的結構以了解鳥類空氣動力學。