求翻译：汉朝的朱买臣，以砍柴维持生活，每天边担柴边读书。隋朝李密放牛把书挂在牛角上，有时间就读。他们在艰苦的环境里仍坚持读书。是什么意思？

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The Zhu Han Dynasty, in order to cut firewood for daily living, studying and firewood. Lee Mi Sui dynasty cows horns hanging in the book, there is time on reading. They are in a difficult environment still insist on reading.

Han Dynasty's Zhu buys the feudal official, chops firewood the maintenance life, every day on the one hand on the other hand the load firewood studies.The Sui Dynasty Li dense cowherd hangs the book in the buffalo and cow horns, has the time study.They in the difficult environment still persisted st

The Han dynasty, Zhu Maichen, to cut firewood to maintain life, every day at your side edge of Qaidam Basin study. Sui Li Mi Cowherd hanging on the Horn Book, time to studying. They still insist on reading in the tough environment.

The Han dynasty, Zhu Maichen, to cut firewood to maintain life, every day at your side edge of Qaidam Basin study. Sui Li Mi Cowherd hanging on the Horn Book, time to studying. They still insist on reading in the tough environment.