It is highly unlikely that she'll be late.

她迟到的可能性极小。

《牛津词典》

But it is highly unlikely to happen.

但这几乎不可能发生。

youdao

It is highly unlikely that any one electoral alliance will win a majority of seats.

这不大可能发生，因为不论是哪一个选举联盟，都想获得多数的席位。

youdao

All said, it is highly unlikely that NASA has contacted China on this matter.

FORBES: US Astronaut Thinks China Can Save [Your City Name Here] From Certain Destruction

It could happen again in the future, he warns, though he believes it is highly unlikely.

WSJ: The Weekend Interview With Gavin Andresen: Bitcoin vs. Ben Bernanke

Mr Field says it is highly unlikely he will change his mind over the euro.

BBC: The Field Family