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      useful
      
	
      英 ['ju?sf?l; -f(?)l]
美['jusfl]

      


	    
      
	
        
    
      • adj. 有用的，有益的；有幫助的
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      英英釋意
      
	
      
	
      1. being of use or service;
      "the girl felt motherly and useful"
      "a useful job"
      "a useful member of society"
      

      2. of great importance or use or service;
      "useful information"
      "valuable advice"
      

      3. capable of being turned to use or account;
      "useful applications of calculus"
      

      4. having a useful function;
      "utilitarian steel tables"