amplify

fe’l verb

1. To render larger, more extended, or more intense. amplify a microscopes
2. To increase the amplitude of something, especially of an electric current. amplify a signal
3. To enlarge by addition or commenting; to treat copiously by adding particulars, illustrations, etc.; to expand.
4. To add content that is not present in the source text to the target text, usually to improve the fluency of the translation.