adj.洪水的，大变动的

The cataclysmal event reshaped the political landscape of the entire region.
这场灾难性事件彻底改变了整个地区的政治格局。
The volcanic eruption was a cataclysmal event that destroyed the entire town.
火山爆发是一场灾难性的事件，摧毁了整个城镇。
After the cataclysmal flood, the survivors were left with nothing but their lives.
经历那场灾难性的洪水后，幸存者们只剩下一条命。
The asteroid impact caused a cataclysmal change in Earth's climate.
小行星撞击导致地球气候发生了灾难性的变化。
The financial crisis had cataclysmal effects on the global economy.
金融危机对全球经济产生了灾难性的影响。
The earthquake was a cataclysmal disaster that left thousands homeless.
地震是一场灾难性的灾难，使得成千上万的人无家可归。
The cataclysmal war led to the fall of the ancient civilization.
那场灾难性的战争导致了古老文明的衰落。
The nuclear explosion was a cataclysmal event that devastated the surrounding areas.
核爆炸是一场灾难性的事件，摧毁了周边地区。
The cataclysmal storm caused massive flooding and loss of life.
灾难性的风暴造成了严重的洪水和人员伤亡。
The cataclysmal failure of the dam led to widespread destruction downstream.
大坝的灾难性倒塌导致下游地区遭受广泛破坏。