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      headway
      
	
      英 ['hedwe?]
美['h?d,we]

      


	    
      
	
        
    
      • n. 前進(jìn)；進(jìn)步；航行速度；間隔時(shí)間
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      英英釋意
      
	
      
	
      1. vertical space available to allow easy passage under something
      

      2. forward movement;
      "the ship made little headway against the gale"