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primary feather的英文翻譯是什麼意思，詞典釋義與在線翻譯：
英英釋義
Noun:
-
one of the main flight feathers projecting along the outer edge of a bird's wing
primary feather的用法和樣例：
例句
用作名詞 (n.)
- Upperwing has pale greyish-white primary bases and often pale rufous or yellowish-brown forewing, paler than dark grey flight-feathers.
翼上初級飛羽呈現灰白色，翼前緣經常為淡棕色或黃棕色，比飛羽的深灰色要淺。
