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foetal sac例句_foetal sac英汉例句_foetal sac双解例句_果味酸柯林斯词典
果味酸柯林斯词典

foetal sac

F 开头单词

常见例句

    雙語例句

  • The chorion and amnion are foetal membranes that contribute to the placenta and the foetal sac respectively.
    羢毛膜和羊膜是分別形成胎磐和羊膜囊的胎膜組織。
    • 返回 foetal sac