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      bifocals
      
	
      英 [ba?'f??k?lz]
美[,ba?'foklz]

      

      
	
      

	    
      
	
        
    
      • n. 遠(yuǎn)視近視兩用的眼鏡
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TEM8
      
	
      詞態(tài)變化
      
	
      
	
      形容詞:?bifocal;
      
		
      中文詞源
      
	
      
	
      bifocals 雙光眼睛
      前綴bi-, 二。詞根foc, 焦點(diǎn)，見focus.
      
		
      英文詞源
      
	
      
	
      bifocals (n.)
      "bifocal spectacles," 1899, see bifocal. Conceived by Benjamin Franklin, but called by him double spectacles.