It's pretty common for translators to do exactly that, usually via either footnotes or context created by deliberate word choice. Read classical translations for example and they'll often point out wordplay in the original language that doesn't quite work in translation. I've even seen that in subtitles.

LLMs tend to imitate that practice, e.g. Gemini seems to be doing that by default in its translations unless you stop it. The result is pretty poor though - it makes trivial things overly verbose and rarely gets the deeper cultural context. The knowledge is clearly here, if you ask it explicitly it does it much better, but the generalization ability is still nowhere near the required level, so it struggles to connect the dots on its own.