calamitous

The failed invasion had calamitous effects on the country's economy and morale.

(Chinese) 失败的入侵对该国的经济和士气造成了灾难性的影响。

A calamitous earthquake struck the region, destroying thousands of homes.

(Chinese) 一场灾难性的地震袭击了该地区，摧毁了数以千计的房屋。