马克思热爱数学，几十年坚持不渝地利用闲暇时间学习数学，留下了近千页的数学手稿。
K. Marx had deep love for mathematics. For decades, he persisted in studying mathematics at leisure, taking nearly one thousand pages of mathematical notes, which still remained.
检查数学题目，校对论文手稿，看看有没有拼错的单词。
Offer to check math problems, proofread written papers, and look over spelling words.
他翻译了一些手稿，也发表过数学论文。
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