scumble
v. 将色彩弄淡；渐使颜色浅淡
n. 渐淡；渐淡画法
过去式：scumbled 过去分词：scumbled 现在分词：scumbling 第三人称单数：scumbles
英英释义
Noun
- the application of very thin coat of color over the surface of a picture