我的同桌是一个勤奋的学生，他严格遵守学校的规章制度。
My deskmate is a hard-working student, who keeps the school rules well.
他是一个认真勤奋的好学生。
利布雷斯库总是对学生非常慷慨，谦恭为人， 是一个富有奉献精神，鼓舞人心的老师，也是非常勤奋的学者。
Professor Librescu was always generous with his students, an extremely humble person, a very dedicated and inspiring teacher, and a very diligent researcher.
只要还有一个勤奋刻苦的学生，在一堆厚厚的教辅书中翻来翻去、搔首踟蹰，费力地寻找那似曾相识的题目和解答，我们就绝不会满足。
We can never be satisfied as long as there is still one hard-working student who has to be in perplexity and search arduously for a similar exercise from a high stack of books.
只要还有一个勤奋刻苦的学生，在一堆厚厚的教辅书中翻来翻去、搔首踟蹰，费力地寻找那似曾相识的题目和解答，我们就绝不会满足。
We can never be satisfied as long as there is still one hard-working student who has to be in perplexity and search arduously for a similar exercise from a high stack of books.
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