Pivot language
（重定向自Parameter language）
A pivot language, sometimes also called a bridge language, is an artificial or natural language used as an intermediary language for translation between many different languages – to translate between any pair of languages A and B, one translates A to the pivot language P, then from P to B. Using a pivot language avoids the combinatorial explosion of having translators across every combination of the supported languages, as the number of combinations of language is linear (![n-1](/Images/godic/202502/01/a438673491daae8148eae77373b6a4672721.png")
), rather than quadratic ![\left(\textstyle{\binom{n}{2}}=\frac{n^2-n}{2}\right)](/Images/godic/202502/01/76884d5fd4c0853cd0f3eebc05bb200e2721.png")
– one need only know the language A and the pivot language P (and someone else the language B and the pivot P), rather than needing a different translator for every possible combination of A and B.