cleaness清洁度
cleanadj.干净的;纯洁的;完全的;空白的;正当的;精准的adv.完全地n.清洁v.打扫;清扫;擦,刷
cleaning and tidying清整洁
clean mate's receipt大发不义之财
Clean operation zone洁净操作区
clean down the walls擦净墙壁.
cleaning by solvents溶剂净化
clean operating room洁净手术室
cleaning after blast爆破清理
clean surplus theory[经] 净盈余学说(理论)
cleaning of aluminum铝包清理
cleaning performance清洗效果