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      2. 
		
		
      
			
			
      
				
			
      
			
			
		
      
    
      
        
      
            
      
                
                    
      
	
      heretofore
      
	
      英 [h??t?'f??]
美[,h?rtu'f?r]

      


	    
      
	
        
    
      • adv. 直到此時(shí)，迄今為止；在這以前
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      英英釋意
      
	
      
	
      1. used in negative statement to describe a situation that has existed up to this point or up to the present time;
      "So far he hasn't called"
      "the sun isn't up yet"