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foetal sac例句_foetal sac英汉例句_foetal sac双解例句_甲百汇小鸡词典
甲百汇小鸡词典

foetal sac

F 开头单词

常见例句

    双语例句

  • The chorion and amnion are foetal membranes that contribute to the placenta and the foetal sac respectively.
    绒毛膜和羊膜是分别形成胎盘和羊膜囊的胎膜组织。
    • 返回 foetal sac