It sounds as if you are saying the lack of a short code in a language makes a concept untranslatable.
But that doesn't seem right. In 1943, I couldn't translate a document about nuclear reactors into French or Spanish because the only languages with words for "nuclear reactor" were English and German. Does that make "nuclear reactor" untranslatable?
Of course, once the concept became relevant to French speakers, they borrowed or created a short coding.
From what you've said, you can translate "je vous en prie" to "you're welcome and I mean that with the respect a subordinate accords his superiors". That just doesn't have a short coding in English because the concept being encoded is rarely relevant to English speakers.
In programming terms, (map f lst) translates to c, it's just not as short.