They pegged away in silence for some time.
他们默默地干了一阵。
I've pegged away at collecting the reading materials for that week's lecture.
我已全力以赴为那周的讲座搜集阅读材料。
The boy pegged away at a homework assignment.
男孩孜孜不倦地做老师指定的家庭作业。
He pegged away at his studies so that he would get high marks.
他孜孜不倦地学习以获得高分。
He pegged away at his studies so that he would get high marks.
他孜孜不倦地学习以获得高分。
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