falling-off phenomenon

例句：

1. 1.The falling-off of the paint on the wall is a common problem in old buildings.
   墙上油漆的脱落是老建筑中常见的问题。
2. 2. The researcher found that the falling-off phenomenon could be caused by various factors.
   研究人员发现，脱落现象可能由多种因素引起。
3. 3. The team was able to successfully repair the damaged roof and prevent any further falling-off phenomena.
   团队成功地修复了受损的屋顶，并防止了任何进一步的脱落现象。