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under tail covert /ʌmbɹˈɛlə ˈstand/ n

中文：尾下覆羽

中文 · 尾下覆羽Español · cobertera inferior de la colaFrançais · tectrice sous-caudale
Meaning：Short feather covering the lower portion of the base of the tail; it maintains the body’s internal temperature.
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Bird anatomy

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