It's important to study hard, but don't overdo it.

刻苦学习很重要，但不要超过极限。

《柯林斯英汉双解大词典》

I promise her to study hard in the university because I am her hope.

我答应她在大学努力学习，因为我是她的希望。

youdao

I promised her to study hard in the university because I am her hope.

我答应她在大学里努力学习，因为我是她的希望。

youdao

He said they believed that to study hard and perform well in school was "acting white."

VOA: special.2009.11.01

But also to teach him discipline and to work hard and to study hard

但还要教会他纪律、努力工作和好好学习，

要成为好爸爸 - SpeakingMax英语口语达人

I can't help but continue to encourage you to study hard.

我可忍不住继续鼓励你好好学习哦！

I can't help but 课堂 - SpeakingMax英语口语达人

The atmosphere in some schools is so hostile that girls find it hard to study.

ECONOMIST: South Africa: Wolves in teachers’ hats | The

We work and we hustle, you study hard to get your degree -- because you believe in success and individual initiative.

WHITEHOUSE: President Obama Speaks on Student Loan Interest Rates in Colorado | The White House

You study hard to compete with classmates, but you also stay fluent in your own culture, because you never know when you might need it.

CNN: Commentary: Latino in the Ivy League