Before revision:  In our experiments, it boosts the performance of the standard UMT methods by 1.5-2.0 BLEU. In particular, in WMT'14 English-French, WMT'16 German-English and English-Romanian , CBD outperforms cross-lingual masked language model (XLM) by 2.3, 2.2 and 1.6 BLEU , respectively.
After revision:  In our experiments, CBD achieves the state of the art in the WMT'14 English-French, WMT'16 German-English and English-Romanian , CBD outperforms cross-lingual masked language model (XLM) by 2.3, 2.2 and 1.6 BLEU , respectively.