allantois 

  1. 名詞
尿囊, 尿膜
/此名詞複數可為"allantoises"或"allantoides"/

    
                        
    2. 
                                            

                

            

            
            

                

                
例句

                

                    
    
                                                    
  1. 
                                An amnion, chorion, and allantois are present during embryonic life.                            
    2. 
                                                    
  2. 
                                The allantois (8) is a sac that collects the metabolic waste produced by the embryo.                            
    3. 
                                                    
  3. 
                                Haeckel speculates that the allantois is formed in a similar way in both humans and other mammals.                            
    4. 
                                                    
  4. 
                                The virus replicates within the allantois of the embryo, which is the equivalent of the placenta in mammals.                            
    5. 
                                                    
  5. 
                                Among three fetal membranes in mammals, the yolk sac, allantois , and amnion, only the first two form a placenta.                            
    6.