crumbleKK [ˈkrʌmbəl] ｜ /ˈkrʌmbəl/
GEPT 中高級
C2verb
break or fall apart into fragments
As she picked up the old book, its pages began to crumble in her hands.
碎裂；崩解
C2verb
fall into decay or ruin
After years of neglect, the old house began to crumble, with the walls crumbling and the roof collapsing.
頹圮；衰敗
C2verb
fall apart
The old abandoned house began to crumble as the years of neglect took their toll.