He was not a very hard-working student when he was young.

他年轻时不是一个很用功的学生。

youdao

Li Kang is a hard-working student and we should learn from him.

李康学习很用功，我们应向他学习。

youdao

My deskmate is a hard-working student, who keeps the school rules well.

我的同桌是一个勤奋的学生，他严格遵守学校的规章制度。

youdao

Working as a resident assistant in student housing is one way to help finance an education.

VOA: special.2009.03.26

You know that you remind me of a very hard working student.

你知道你让我想起了很勤奋学习的学生。

remind me of 课堂 - SpeakingMax英语口语达人

He invited a confederate, a graduate student who was working with him in his lab-- Psychologists--Social psychologists always call people " who are in the employ of the experimenter "confederates."

他邀请了一个助手,和他一起在实验室工作的研究生-,心理学家-社会心理学家总是称,在实验室任职的研究生“助手“

耶鲁公开课 - 心理学导论课程节选

Raised by his maternal grandparents, Dr Murray proved a hard-working student, eventually following his absent father, also a doctor, to the US - where he enrolled at Texas Southern University.

BBC: Profile: Dr Conrad Murray

She took my personal finance course as an elective, and the smart, hard-working student followed all her assignments, including the one that called for her to obtain a free copy of her credit report.

FORBES: How Credit Reports Can Protect You From Identity Theft

Jonathan Taylor, for example, is a hard-working music student who does just that -- he also happens to be Richard's nephew.

CNN: The Quest for music