由于缺乏维护，这座老房子的状况开始恶化。

The ___deterioration of the old house's condition is due to lack of maintenance.

长期的压力可能导致身体和心理健康的逐渐恶化。

Chronic stress can lead to the gradual ___deterioration of both physical and mental health.

由于年久失修，这座老房子的屋顶出现了明显的损坏。

The old house shows visible ___deterioration in its roof due to years of neglect.