Definition
to continue working persistently and with great effort
努力不覺；努力工作
He hammers away at the project every day to get it completed.
他每天都在這個專案上不斷努力，以完成它。
I am hammering away at math to pass the exam.
我正在努力學習數學以通過考試。
She is hammering away at her piano skills, practicing for hours without a break.
她正在努力練習鋼琴技巧，連續練習幾個小時不休息。