[bang away] vi (ca. 1889) 1: to work with determined effort "students banging away at their homework"
2: to attack persistently "police are going to keep banging away at you --Erle Stanley Gardner"
[bang away] vi (ca. 1889) 1: to work with determined effort "students banging away at their homework"
2: to attack persistently "police are going to keep banging away at you --Erle Stanley Gardner"
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012