gradedadj.等级的；按等级的；梯级的动词grade的过去式和过去分词.graden.等级；年级；成绩；斜坡v.分级；评分；渐次变化grades optimization品位优化grade signal marker上坡信号标志grade of metropolis都会级graded subcoalgebra分次子余代数graded broken stone级配碎石grades of tax rates税率等级grade A vehicle tax甲种车辆税Grade of protection防护等级grades of penalties等级grade B vehicle tax乙种车辆税