这是件困难的工作，但如你坚持不渝，最后是能成功的。
It's hard work but if you hang on you'll succeed in the end.
但他对其深爱的雪莱和拜伦的新近评著的关注坚持不渝。
He never failed to keep up with the latest works on his great loves, Shelley and byron.
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.
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.
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