hammer away at
片語動詞所屬單字hammer
hammer away at — 片語動詞
1. to keep working on something with steady effort until it is finished or solved
1.片語動詞
釋義
堅持不懈地做；反覆強調
to keep working on something with steady effort until it is finished or solved
例句
The young programmer hammered away at the bug in the code all night.
The teacher hammered away at the importance of reading every day.