this is Google Translate but but this word crankily was previously grin jingly and I think spoof spoof gets translated to tragic travesty so so this is one way that you can augment your samples and then the other one that they have for text is this tf-idf based word replacement so and they use this for text classification so so the idea here is sometimes in back translation the the Augmented transformation might actually miss translate some of the key words for that sample and in the classification tasks and so here they basically assign