drive away at

• vt. 努力做(孜孜不倦地干)

例句

用作及物动词 (vt.)

1. They were going at the job for all they were worth.
   他们在尽最大努力做此事。
2. They have been hammering away at Comrade Yu for a few days, trying to change his mind.
   他们几天来一直在努力做俞同志的工作，试图改变他的主意。