Is this sentence a common one in native English?

[Naomi2304]

I've been told that the sentence "there is no denying that..." is not an usual one in native English(i.e. there is no denying that the earth is round.),and a native English speaker wouldn't write in this way.Is that true?

And what will be the better sentence?

[ikiebert]

Yes, it is correct and normal English (American, at least) to say, "there is no denying" something that is true beyond dispute or that the speaker wants to assert is beyond dispute. I believe it would be used much more often in conversation, an oral presentation, or informal writing than in formal writing, where you would be more likely to see such phrases as, "it is true that," or "it is beyond dispute that," or perhaps, "it cannot be denied that . . . ."

You might also see "of course," as an introductory phrase with the same meaning. For example: "There is no denying that last year our economy was in serious trouble." "It is beyond dispute that last year . . . ." "Of course, last year . . . ."

(And by the way, the correct question is: "What would a better sentence be?" or "How would a better sentence be worded?" or "What is a better way to say this?" or "Is there a better way to say this?")

[Raymott]

I've been told that the sentence "there is no denying that..." is not an usual one in native English(i.e. there is no denying that the earth is round.),and a native English speaker wouldn't write in this way.Is that true?

And what will be the better sentence?

I agree with the above posts. It's also common where I come from.

Note that the phrase you asked about is not a sentence.
Any string of words can be a phrase, but a sentence is a specific thing.

[apex2000]

I've been told that the sentence "there is no denying that..." is not a usual one in native English(i.e. there is no denying that the earth is round.),and a native English speaker wouldn't write in this way.Is that true?

And what would be a better sentence?

It is is frequent use. You have been misguided, as shown by other posters. But do look at the alterations I have made to your post. You may need some help with 'a usual' where you have supposed 'an' in front of a vowel. The point here is the sound. Saying usual sounds like 'yousual' and so it does not require 'an', whereas an underneath cavern needs to be explored.