disaster

他的想法完全是一场灾难。

His idea was a total ___disaster.

针对最近的火车灾难的调查正在进行中。

An investigation is underway into the recent train ___disaster.

派对原本进行得很顺利，直到一场断电的灾难突然降临。

The party was going perfectly until ___disaster struck in the form of a power outage.