For each man who loses his job unemployment is a personal catastrophe.失去工作对每个人来说都是一场灾祸。

If the world is to avoid environmental catastrophe, advanced economies must undergo a profound transition.世界要避免环境灾害, 各发达经济体就必须彻底转型。

From all points of view, war would be a catastrophe.不管从哪个角度看, 战争都是一场灾难。