Whitewash is a mixture of lime or chalk and water that is used for painting walls white.
whitewashes , whitewashing , whitewashed
If a wall or building has been whitewashed, it has been painted white with whitewash.
The walls had been whitewashed.
墙壁被粉刷成白色。
If you say that people whitewash something, you are accusing them of hiding the unpleasant facts or truth about it in order to make it acceptable.
cover up
The administration is whitewashing the regime's actions.
政府正在粉饰该政权的行为。