crumble

The ancient stone walls began to crumble after centuries of exposure to wind and rain.

(Chinese) 古老的石墙在经受了几个世纪的风雨侵蚀后开始崩裂。

As the economy worsened, the dictator's control over the country began to crumble.

(Chinese) 随着经济恶化，独裁者对国家的控制开始瓦解。