Before revision:  Experiments show our method outperforms strong baselines in terms of translation quality and delay , when translating from German/Arabic/Czech/Bulgarian/Romanian to English .
After revision:  Next, we perform a coupled scheduled sampling to effectively mitigate the exposure bias when learning both policies jointly with imitation learning. Experiments on six language-pairs show our method outperforms strong baselines in terms of translation quality and delay , when translating from German/Arabic/Czech/Bulgarian/Romanian to English .