amplification
noun [ U ] uk/ˌæm.plɪ.fɪˈkeɪ.ʃən/ us/ˌæm.plə.fəˈkeɪ.ʃən/
扩音
Amplification makes music or other sounds louder.
electronic amplification 电子扩音
formal发挥，引申；阐述，详述
added detail
The horror lies in the violence itself, which needs no amplification. 暴力行为本身就令人恐惧，对此无需作任何阐释。