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      2. 
		
		
      
			
			
      
				
			
      
			
			
		
      
    
      
        
      
            
      
                
                    
      
	
      perimeter
      
	
      英 [p?'r?m?t?]
美[p?'r?m?t?]

      


	    
      
	
        
    
      • n. 周長(zhǎng)；周界；[眼科] 視野計(jì)
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      英英釋意
      
	
      
	
      1. the boundary line or the area immediately inside the boundary
      

      2. a line enclosing a plane areas
      

      3. the size of something as given by the distance around it