cataclysms
n.
（突然降临的）大灾难( cataclysm的名词复数 );
例句:
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Then again, some theorise that past cataclysms actually sped up evolution.
来自SA
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I trust we can all observe with deference the coming cataclysms with such aplomb.
来自SA
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You can climb the volcano responsible for one of history's greatest cataclysms and enjoy the stunning view.
来自THETIMES