adj.求和的，做加法的；v.合计( sum的现在分词 )；总结，归纳；总计，计算…的总数（常与 up 连用）；集中（常与 up 连用） 英英释义： sum[ 'sʌmiŋ ]n.a quantity of money"he borrowed a large sum"同义词：sum of moneyamountamount of moneya quantity obtained by the addition of a group of numbers同义词：amounttotalthe final ag