monotreme 

  1. 名詞
單孔目動物
/此名詞複數為"monotremes"/

    
                        
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例句

                

                    
    
                                                    
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                                Band profile at Monotreme records                            
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                                Teinolophos , from Australia, is the earliest known monotreme .                            
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                                The platypus' electroreception is the most sensitive of any monotreme .                            
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                                However, the five species of monotreme , the platypuses and the echidnas, lay eggs.                            
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                                During incubation, monotreme eggs are covered in a sticky substance whose origin is not known.                            
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