the gradations on a thermometer温度计上的刻度But TV images require subtle gradations of light and shade.但是，电视影像要求有十分细微的光影变化。There are many gradations between good and bad.在好与坏之间还有许多不同的层次....

gradations的音标：...

n.（从一事物到另一事物的）渐变( gradation的名词复数 )，（事物划分的）阶段，等级，刻度...