Figure 1 Left results of different fine tuning baselines . Right Results of utilizing back translation on baselines

We will follow the suggestions on writing and related works and revise accordingly. We agree with the reviewers' Net (AB-Net FB), the variant that trains AB-Net from scratch (AB-Net SC) and baselines trained with back-translation. English Wikipedia data, which is a subset of the training corpus of BERT. Results are shown in Figure 1. And our method is orthogonal with BT as shown by the Ro-En results in Table 3(a) of the main paper.