It all sounded highly improbable.

一切听上去很荒唐。

《牛津词典》

Ordered arrangements of large groups of atoms and molecules are highly improbable.

大的原子群和分子群的有序排列是极不可能的。

《柯林斯英汉双解大词典》

CAN something inevitable also be highly improbable?

一件事可以同时无可避免又极不可能吗？

youdao

The composer constructs a situation on the board that is theoretically possible, although often highly improbable.

ECONOMIST: Self-inflicted puzzles

But the Hitchhiker's Guide to the Galaxy has never had a problem with highly improbable events.

BBC: And another thing...

Nassim Nicholas Taleb is an applied statistician and derivatives trader-turned-philosopher, and author of The Black Swan: The Impact of the Highly Improbable.

FORBES