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.
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