It is an undeniable fact that crime is increasing.

犯罪在增加是无可争辩的事实。

《牛津词典》

It is an undeniable fact that animals play a vital role in maintaining the subtle balance of the earth's ecological system.

不可否认，动物在维持地球生态系统的微妙平衡上起到了重要作用。

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No matter how sad and frustrating it may sound to us, it is still an undeniable fact that everything in this world has its beginning and its end.

尽管听起来有多么悲伤沮丧，但这是无可辩驳的事实——世间每一样东西都有其开始与结束。

youdao

I take this to be an undeniable fact, but this is easy for us to say - it's easy for us to say that it's Milton's memory which is the fount of so much of the poem's erudition.

我认为这是无可辩驳的，但我们可以轻易地说,我们可以说那是弥尔顿的记忆,作为了这部诗篇如此广博知识的源泉。

耶鲁公开课 - 弥尔顿课程节选

Now, it is an undeniable fact that countries who out-educate us today are going to out-compete us tomorrow.

WHITEHOUSE: President Obama on No Child Left Behind Flexibility

The fact - for it is an undeniable one - that Romney is stiff on the stump does not really matter.

BBC: Barack Obama's 'firewall' burning - Republicans