参考词典中flightless bird的常规释义:
英英解释
1个名词解释
- flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds
[同] flightless bird, ratite, ratite bird
[反] flying bird, carinate, carinate bird
点击查看……- flightless birds having flat breastbones lacking a keel for attachment of flight muscles: ostriches; cassowaries; emus; moas; rheas; kiwis; elephant birds







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