>lots of human-translated passages in their corpus Yes. I remember reading that the EU parliamentary proceedings in particular are used to train machine trans

>lots of human-translated passages in their corpus Yes. I remember reading that the EU parliamentary proceedings in particular are used to train machine translation models. Unfortunately, I cant remember where I read that. I did find the dataset: https://paperswithcode.com/dataset/europarl https://paperswithcode.com/dataset/europarl