Young and old to learn hard, time is not an inch of light.

少年易学老难成，一寸光阴不可轻。

youdao

Students should make better use of the four years to learn hard in university.

学生应该充分利用大学四年时间努力学习。

youdao

I realized that I know too little things and have little experience in life. So from now on, I will learn hard and enlarge my mind.

我开始意识到自己知道的东西太少，生活经验也少的可怜。所以，从现在开始我要不断的学习、充实自己。

youdao

"A.P.courses are really hard and they really force you to learn and are really good.

VOA: special.2009.11.05

What did you learn about how easy or hard it is to keep track of what food intake is?

你从记录食物摄入过程中,学到了什么,记录饮食是难是易

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

And as far as right now, just study hard, learn the material that will help you succeed.

就现阶段来讲，最重要的是勤奋学习，有一些知识是走向成功必不可少的，你要好好学习这些知识。

如果是在考虑留学 - SpeakingMax英语口语达人

Some self-publish, and learn hard lessons about marketing and distribution.

FORBES: Are You An Author? Or Thinking About It? Here's How To Survive The Publishing World Today

They've had to find the confidence themselves to talk about condoms and learn the hard way.

BBC: Condoms: Why are we still embarrassed about using them?

Basically, Edison had to learn the hard way about finding a market need first.

FORBES: Are You Making Something Usable? Does Anyone Care? (Part 3)