cretaceous 

  1. 名詞
不可數名詞: (地質的)白堊紀, 白堊系

    
                        
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  2. 

    形容詞
白堊的, 含白堊的

    

    
                        
    3. 
                                            

                

            

            
            

                

                
例句

                

                    
    
                                                    
  1. 
                                The Deccan Traps: Are they Cretaceous or Tertiary?                            
    2. 
                                                    
  2. 
                                Ours are bad hair nightmares from the Cretaceous .                            
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  3. 
                                This area was forested during the Cretaceous period.                            
    4. 
                                                    
  4. 
                                Cretaceous rocks are cover an extensive area in India.                            
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  5. 
                                Cambrian to Cretaceous changes in hardground communities.                            
    6.