calamity

The floods in the valley were a national calamity that required immediate international aid.

(Chinese) 山谷里的洪水是一场国家灾难，需要立即进行国际援助。

Losing his job at sixty was a personal calamity from which he never fully recovered.

(Chinese) 六十岁失业是他个人的不幸，他从此再未完全恢复过来。