There is no rational explanation for his actions.

对他的所作所为无法作出合理的解释。

《牛津词典》

No rational person would ever behave like that.

有头脑的人都不会这样做。

《牛津词典》

In an image-centered and pleasure-driven world, Postman noted, there is no place for rational thinking, because you simply cannot think with images.

波斯曼指出，在一个以形象为中心、以快乐为驱动力的世界里，没有理性思考的空间，因为你根本无法用形象思考。

youdao

There was no rational decision-making involved.

FORBES: Mind-Bending Idiocy Is The Reason We Don't Have A Gold Standard Today

Though Matthews is heir to an impressive NFL lineage going back two generations--which includes Hall of Fame uncle Bruce Matthews--there was no rational reason to assume that he would follow in the footsteps of his uncle, father and grandfather.

FORBES: Political Economy

These are all relatively modest measures. (We centrists always try to balance idealism with realism.) Unfortunately, the larger opportunities for broad tax reform or a grand bargain on long-term deficits and debt are unlikely to come until after the election -- and there's no rational reason to expect that the hyperpartisan politics will end then.

CNN: 3 bipartisan bills that could get the economy moving