Before revision:  Prior to fine-tuning, our method replaces word embeddings in embedding layers of the NMT model , by projecting general word embeddings induced from monolingual data in the target domain onto the source-domain embedding space.
After revision:  Prior to fine-tuning, our method replaces word embeddings in embedding layers of the NMT model by projecting general word embeddings induced from monolingual data in the target domain onto the source-domain embedding space.