Research at Google on Tuesday launched Google Neural Machine Translation system, now in production with Chinese to English -- "a notoriously difficult language pair," according to Quoc V. Le and Mike Schuster, research scientists on the Google Brain Team. GNMT already is powering the Google Translate mobile and Web apps for 18 million or so Chinese to English translations daily. Google will roll out GNMT to the rest of the 10,000 language translation pairs its Google Translate service supports in the coming months.