“内弯”用英语怎么说？

肘部 、 飞节和足爪既不向内弯,也不向外翻.Elbows, hocks and feet turn neither in nor out.到足爪的距离短, 既不向内弯,也不向外翻.飞节关节清晰.The hocks are short to the feet, turning neither in nor a well defined hock joint.尾鳍边缘一定要直或是向外弯曲, 不能向内弯折.Caudal edges have ...