greyout灰晕,灰暗greyadj.灰色的n.灰色vi.变成灰色=<美>grayGrey-rumped Swiftletn.小灰腰金丝燕Grey-headed Whistlern.灰头啸鹟grey synergistic model灰色协调度模型grey evaluation method灰色评价法Grey system prediction灰色系统预测Grey-footed chipmunkn.灰足花鼠grey twill for raising斜纹绒坯布grey-green roof tile青瓦grey genetic algorithm灰色遗传算法grey optimal selection灰色优选