fall into decay

• vi. 腐烂(衰落；倒塌；损坏)

例句

用作不及物动词 (vi.)

1. The house looked as if it was about to fall down.
   房子看起来好像就要倒塌似的。
2. That wall leans so much it might fall over.
   那堵墙倾斜得很厉害，也许会倒塌的。