痛打
There's someone battering away at the door.───有人在不停地嘭嘭敲门。
Someone is battering away at the door.───有人在砰砰擂门。
Someone is battering away at the door.
He kept battering away at the door.
There's someone battering ( away ) at the door.
frittering away───一点点地浪费
battering ram───破城槌（等于ram）；撞车
beavering away───努力工作；勤奋工作；辛勤劳动；埋头苦干
hammering away───苦心研究
backing away───无法维持正常交易；堵墨
barter away───吃亏廉卖；拿…作交易
battering down───v.打烂