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.

这场飓风是该州历史上最严重的自然灾害之一。

The hurricane was one of the worst natural ___disasters in the state's history.

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.