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aftershaft是什么意思

aftershaft

美['ɑːftəˌʃɑːft]  英['ɑːftəʃɑːft]
n.  [鸟]后羽;副羽;后羽干

英英释义

Noun
  1. a supplementary feather (usually small) on the underside of the base of the shaft of some feathers in some birds
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