goldmines 

  1. 名詞
goldmine複數: 金礦
大財源
金山, 寶庫

    
                        
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例句

                

                    
    
                                                    
  1. 
                                Already the goldmines were beginning to be felt.                            
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  2. 
                                MIT Open Online Physics Courses Are Research Goldmines                            
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  3. 
                                The Bendigo goldmines were the most productive in Australia.                            
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  4. 
                                The Rand Rifles Mine Guards helped to protect the goldmines .                            
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  5. 
                                Fortunately, the alley's rubbish skips were like twin goldmines .                            
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