那当然不合乎事实，这个想法太荒唐了！

Of course it's not true, what an absurd idea.

《牛津词典》

一方面，不给百万富翁增税；另一方面，把孩子们赶出学前班。那未免太荒唐了。

On the one hand, it does not increase taxes for millionaires; on the other hand, drive children out of preschool. That's too ridiculous.

youdao

天气这么糟糕还要去旅行，太荒唐了。

It would be sheer insanity to attempt the trip in such bad weather.

《牛津词典》