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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。
youdao
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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。
youdao
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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。
youdao