yarn bombing

剑桥词典

the activity , often done secretly, of covering parts of buildings , etc. with decorative items that have been knitted , as a form of art
针织涂鸦，毛线大爆炸（一种街头艺术活动，用各色毛线编织的物品偷偷覆盖建筑物的一些部分） 返回 yarn bombing