An undertaking by a group of people to paint or decorate the exterior of buildings or other structures to improve, or show the4 need to improve, the appearance of a run-down area.

油漆行动(一群人联合起来油漆和粉饰楼宇或其他建筑物的外墙，以改善或表示有需要改善失修地区的外貌)。