furcula 

  1. 名詞
(1)(動物的)叉骨, 叉狀器
(跳蟲、彈尾蟲等的)叉突, 彈器
/以上複數為"furculae"/
(2)furculum複數:
(鳥禽胸部的)叉骨

    
                        
    2. 
                                            

                

            

            
            

                

                
例句

                

                    
    
                                                    
  1. 
                                The clavicles do not fuse into a furcula .                            
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  2. 
                                Bucky's furcula is the first one found for the genus "Tyrannosaurus.                            
    3. 
                                                    
  3. 
                                It also indicates that the furcula of birds is derived from clavicles.                            
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  4. 
                                One must ask why only this British Museum specimen shows a clear furcula .                            
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  5. 
                                Tinamous have a proper semicircular furcula , with no trace of a hypocleidium.                            
    6.