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      helium
      
	
      英 ['hi?l??m]
美['hil??m]

      


	    
      
	
        
    
      • n. [化學(xué)] 氦（符號(hào)為He，2號(hào)元素）
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      英英釋意
      
	
      
	
      1. a very light colorless element that is one of the six inert gasses; the most difficult gas to liquefy; occurs in economically extractable amounts in certain natural gases (as those found in Texas and Kansas)