朽

例句：

1. 1. The old tree is slowly rotting away.
   这棵老树正在慢慢腐烂。
2. 2. The old books are starting to decay.
   旧书开始腐烂了。
3. 3. The old building has been deteriorating for years.
   这座老建筑已经衰败多年了。