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1. Oxford American Dictionary

   yolk

   • IPA[yōk]

   美式

   • n.
     the yellow internal part of a bird's egg, which is surrounded by the white, is rich in protein and fat, and nourishes the developing embryo；the corresponding part in the ovum or larva of all egg-laying vertebrates and many invertebrates.

   • noun: yolk, plural noun: yolks

2. • 釋義
   • 相關詞

   n.

   名詞

   • 1. the yellow internal part of a bird's egg, which is surrounded by the white, is rich in protein and fat, and nourishes the developing embryo two yolks a mass of yolk
   • ▪ the corresponding part in the ovum or larva of all egg-laying vertebrates and many invertebrates.

   yolk sac

   • n.
     a membranous sac containing yolk attached to the embryos of reptiles and birds and the larvae ...

   Oxford Dictionary

   yolk sac

   • n.
     a membranous sac containing yolk attached to the embryos of reptiles and birds and the larvae ...

   Oxford American Dictionary

   yolk stalk

   • n.
     a tubular connection between the yolk sac and the digestive tract of a developing embryo.

   Oxford American Dictionary

3. • 更多解釋

   yolk

   • IPA[jəʊk]

   英式

   • n.
     the yellow internal part of a bird's egg, which is surrounded by the white, is rich in ... two yolks a mass of yolk

   Oxford Dictionary