| 单词 | primary feather |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔pinion〕A primary feather of a bird.翅前羽：鸟的初级飞羽美国传统〔pinion〕The outer rear edge of the wing of a bird, containing the primary feathers.翼尖，前翼：鸟翼的外后缘，包括初生毛美国传统〔primary〕He is moulting at the moment and has no primary feathers.它目前正在换羽, 还没有长出初级飞羽。外研社新世纪 |
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