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1. Oxford American Dictionary

   gastrula

   • IPA[ˈɡastrələ]

   美式

   • n.
     an embryo at the stage following the blastula, when it is a hollow cup-shaped structure having three layers of cells.

   • noun: gastrula, plural noun: gastrulae

2. • 更多解釋

   gastrula

   • IPA[ˈɡastrʊlə]

   英式

   • n.
     an embryo at the stage following the blastula, when it is a hollow cup-shaped structure having ...

   Oxford Dictionary