disastrous

The sudden stock market crash had a disastrous effect on the retirement savings of many citizens.

(Chinese) 股市的突然崩盘对许多公民的退休储蓄产生了灾难性的影响。

A disastrous flood destroyed the entire harvest, leaving the local farmers without income.

(Chinese) 一场灾难性的洪水摧毁了全部收成，使当地农民失去了收入。