yolk n.蛋黄,卵黄卵黄,羊毛脂...yolk-stopper 卵黄栓...yolk of wool 羊毛脂...egg yolk 蛋黄...yolk bag 卵黄囊...yellow yolk 黄卵黄...yolk membranes 卵黄膜...yolk skin 卵黄膜...yolk cells 卵黄细胞...yolk endoderm 卵黄内胚层...yolk blastopore 卵黄胚孔...yolk plug 卵黄栓...accessory yolk 副卵黄...yolk-sac endoderm 卵黄囊内胚层...yolk-sac umbilicus 卵黄囊脐...yolk granules 卵黄粒...yolk-sac placenta 卵黄囊胎盘,绒[毛]膜卵黄囊胎...yolk stalk 卵黄蒂...yolk sac 卵黄囊卵黄囊...yolk sac antigcns 卵黄囊抗原...yolk epithelium 卵黄上皮...
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