alula
A former village, a district of Channel-Port aux Basques, Newfoundland, Newfoundland and Labrador, Canada
simple past tense and past participle of discind
Synonym of acetylator
(ornithology) A small projection of three or four feathers on the first digit of the wing on some birds.
ツバメは着地前に翼の第一指にある3〜4枚の小さな羽の突起を調整して、低速でも揚力を保った。
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