He's been banging away at that project all week.

她为了这个项目辛苦工作了一个星期。

He banged away at the speech for days.

他用了许多天写完了演讲稿。

Banging away can mean the same thing

" bang away" 也可以表达同样的意义。

She banged away at the piano.

她在随意地弹钢琴。

To review, 'bang out' and 'bang away' can both mean the same thing: to do something quickly, crudely, without great skill.

复习一下，" bang out" 和" bang away" 都可以表示：快速、粗略、没有技巧地做某事。

But you don't just bang away aimlessly at the keys or hack into a piece of wood or knit endless ribbons of material with no aim in sight.

但你不能只是漫无目的地敲打键盘，或随便劈一块木头，又或者在看不到目标的情况下编织无穷无尽的丝带。

Grant was in hot pursuit, banging away at the Confederates from both sides and the rear, while Sheridan's cavalry was heading them off in front, tearing up railway lines and capturing supply trains.

格兰特紧追不舍，从两侧和后方猛烈攻击同盟军，而谢里登的骑兵则在前方阻止他们，撕毁铁路线并夺取补给列车。