Dick is a hard-working student.

迪克是个勤奋的学生。

She is a hard-working student.

她是个很用功的学生。

I agree that Tom is the most hard-working student in our class.

我同意汤姆是我们班级最用功的学生。

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。

She likes to help others. She is a hard-working student. She is good at English and Chinese.

她喜欢助人为乐。她是个很用功的学生。她的英语和语文都很好。

We recommended our monitor for the Grade 7 Most Hard-working Student Award the day before yesterday.

前天，我们推选了我们的班长获得七年级最刻苦学生奖。

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。