英语词汇“bastard wing”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	bastard wing
释义	bastard wing noun A group of small quill feathers on the first digit of a bird’s wing.The alula feather, also called the bastard wing, can be seen at the top center of the photo.... At the same time, he made an anatomical study of bird wings, demonstrating that the bastard wing acts as a brake. Both young green and night herons elevate the bastard wing at times as they climb about the trees, but I have never seen them attempt to use it for grasping.
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