fell into decay

• v. 腐烂(衰落；倒塌；损坏)

fell into decay的用法和样例：

例句

1. The castle has fallen into decay in the last100 years.
   这座古堡在近100年里渐渐荒废了。
2. Old civilization may fall into decay.
   古老的文化可能会渐渐衰落下去。