What is a Language Pair?
Language pair is the term used to denote the source language and the target language involved in text translation. The source language is translated into the target language. For example the language pair English-French (en-fr) means that English will be translated into French. Language pairs are often abbreviated to the shorter two-character form, which is identical to the ISO language code definitions eg. en-fr (English to French), en-de (English to German).
