grade n 等级,阶级
gradient a 步行的 n 坡度 (grad+ient)
gradation n 等级,层次 (grad+ation)
gradual a 逐步的 (grad+ual)
graduate v/n 毕业,分级 (grade 步+uate=完成所有步骤=毕业)
graduation n 毕业 (graduate+ion)
degrade v 降级,退化 (de 向下+grade=向下降级)
degrading a 不名誉的,可耻的 (de+grad+ing=向下降了=不名誉的)
retrograde v 退步,堕落 (retro 向后+grade=向后退步)
upgrade v 上升,升级 (up 向上+grade=向上升级)
downgrade v 贬低,降低 (down 向下=grade=向下贬低)
centigrade a 百分度的 ( centi 百+grade 级,度)