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primary feather

（鸟的）初级飞羽

1、初级飞羽

...primary coil 初级线圈primary feather (鸟的)初级飞羽...primary election (选候选人的)预选...

n.one of the main flight feathers projecting along the outer edge of a bird's wing

同义词：primaryprimary quill

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