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      knock
      
	
      英 [n?k]
美[nɑk]

      


	    
      
	
        
    
      • vi. 敲；打；敲擊
        • 

      • vt. 敲；打；敲擊；批評(píng)
        • 

      • n. 敲；敲打；爆震聲
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      英英釋意
      
	
      
	
      1. the sound of knocking (as on a door or in an engine or bearing);
      "the knocking grew louder"
      

      2. negative criticism
      

      3. a vigorous blow;
      "the sudden knock floored him"
      "he took a bash right in his face"
      "he got a bang on the head"
      

      4. a bad experience;
      "the school of hard knocks"
      

      5. the act of hitting vigorously;
      "he gave the table a whack"