calamitous

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This need not be calamitous.
这并不一定是灾难。
Meanwhile, Noel and his brother have a rather calamitous one.
同时，诺尔和他的哥哥度过了悲惨的一天。
It was an investigation he never got to complete. Because on one calamitous night, Raley’s world was shattered.
那是一个他永远无法完成的调查工作，因为在一个不幸的晚上，雷利的世界坍塌了。

Even some defenders of the industry concede that the problem is real and potentially calamitous.
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Fortunately there are strong reasons for hoping the two sides can avoid a calamitous rift.
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Oil shocks, almost always a function of devalued dollars, have historically triggered calamitous economic turmoil.
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If you describe an event or situation as calamitous, you mean it is very unfortunate or serious.