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greater covert /ˈɡɹeɪtə kəʊvˈɜːt/ n

中文：大覆羽

中文 · 大覆羽Español · coberteras mayoresFrançais · grande sus-alaire
Meaning：Covert feather at the base of the wing protected by the middle coverts when the wing is folded.
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Bird wing

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