adj.升级的，提升的；v.提升( upgrade的过去式和过去分词 )；使（机器、计算机系统等）升级；提高（设施、服务等的）档次；提高（飞机乘客、旅馆住客等）的待遇 英英释义： upgrade[ 'ʌpgreidid ]n.an upward slope or grade (as in a road)同义词：ascentacclivityriseraiseclimbsoftware that provides better performance than an earlier version did