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  1. blastula

    • IPA[ˈblasCHələ]

    美式

    • n.
      an animal embryo at the early stage of development when it is a hollow ball of cells.
    • noun: blastula, plural noun: blastulae

    • 更多解釋
    • IPA[ˈblastjʊlə]

    英式

    • n.
      an animal embryo at the early stage of development when it is a hollow ball of cells.

    Oxford Dictionary