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单词 primary feather
释义

primary feather

noun
Any of the largest flight feathers in a bird’s wing, growing from the manus.Like typical swifts, treeswifts have a long manus and primary feathers....
  • It is very agile in flight, helped by broad wings with the primary feathers separated into ‘fingers'.
  • These birds can't fly away because a few primary feathers on one wing are kept clipped.
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更新时间:2024/9/24 2:34:51