adj.洪水的，大变动的
Few had expected that change to be as cataclysmic as it turned out to be.
没有几个人料到那个变化会如此翻天覆地。
It all happened with the speed of lightning and with cataclysmic violence.
这都是闪电那样快,排山倒海那样猛!
We found evidence of a cataclysmic climate shift, which occurred 10,000 years ago.
我们发现了10, 000年前,灾难性的气候迁移的证据.