fetal sac

 
  • 胎囊

fetal sac的用法和樣例:

例句

  1. It involves removing a small amount of tissue called the chorionic villi, which is located on the outside of the fetal gestational sac and will later become the placenta.
    該檢驗將少量位於胚胎胎囊外部叫做絨毛膜絨毛的組織移除,該組織未來將成長為胎盤。
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