前景色背景色抖动百分比的增加画笔绘制每点颜色从前景向背景随机抖动的程度变大
As the percentage of foreground color and background color jitter increases, the degree of random jitter of each point color drawn by the brush from the foreground to the background becomes greater
以上为机器翻译结果，长、整句建议使用 人工翻译 。