雌雄莫辨

cí xiónɡ mò biàn
  • unable to distinguish the sex identity
雌雄莫辨雌雄莫辨
  1. 从外貌上来看,这种鸟雌雄莫辨。它们的背部是褐色的,有着乳白色和红色的下腹。

    In appearance , the birds of both sexes look very much alike with brown on the back and cream and red on the underside .