I haven't spoken to anyone in English for days and that's a fact.

我有好多天没和任何人说英语了，事实就是这样。

《牛津词典》

A fact is a fact.

事实就是事实。

youdao

It's just a fact.

这只是个事实而已。

youdao

Darwin would later say that this work caused him to realize the struggle for limited resources was a fact of life.

VOA: special.2009.02.25

I really have no idea whether it's a fact, and it's not important in My Fair Lady whether it's a fact.

我真的不知道这是不是真的，但是它在窈窕淑女里面真实与否并不重要。

耶鲁公开课 - 文学理论导论课程节选

We would know as a fact that George Washington threw a silver dollar across the Rappahannock River, except that it's impossible.

我们知道乔治华盛顿曾将一枚银币抛过,拉帕汉诺克河,但这明显是不可能的

耶鲁公开课 - 古希腊历史简介课程节选

But that is pretty much over, a fact that the market is slow to recognize.

FORBES: Buy the Lepers

GERMANIUM, for example, extends lifespan and does for a fact strengthen the immune system.

FORBES: Extradite Andrew Wakefield To Face Fraud Charges In The UK

Despite public denials we now know it has been privately acknowledged as a fact.

BBC: News | UK Politics | Air sell-off 'could compromise safety'