I just came across a sentence in this form:
I wonder if could there be more precise translations ...
Obviously the if doesn't belong. As a native speaker I would say
I wonder __ could there be more precise translations ...
To me this sounds natural in spoken English. It's colloquial or informal but but not so much so to not use in written English, at least not in an online forum for instance. But I'm completely at a loss as to which punctuation belongs where I've put
__ as a placeholder.
Colon? Dash? Ellipsis? Semicolon?
Yes I know there are other ways to make this more elegant written English, but my question is only about punctuation please. I tried to make that clear in the question title, question body, and tags I chose so let me apologise if I failed to communicate that effectively.
Perhaps for the sake of coming up with the best way to punctuate without rewording we should assume we are transcribing spoken dialogue and we are not permitted to change any words but we are expected to spell and punctuate correctly.