Formally, we define untranslated terminology with respect to a source sentence S, sentence created by a translator R, and sentence created by an interpreter I.
we define any consecutive sequence of words s i:j , where 0 ≤ i ≤ N − 1 (inclusive) and i < j ≤ N (exclusive), in source sentence S 0:N that satisfies the following criteria to be an untranslated term: • Termhood: It consists of only numbers or nouns.