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释义
the world > animals > birds > parts of or bird defined by > [noun] > wing or wings > feather(s) on > primary feather(s) > outermost (2)
principal1575

Falconry. Either of the two outermost primary feathers in each wing. Obsolete.

standard1859

Ornithology. Either of the two elongated wing feathers characteristic of certain birds. Cf. standardwing, n., standard-winged, adj.

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更新时间:2024/9/21 13:28:13