If you stick with it long enough and work at it hard enough, you will.

不过只要你努力工作，坚持的够久，你会如愿的。

youdao

So when I'm motivated and in the mood if you will, I go at it hard, since I know it won't last forever.

So when im motivated and in the mood if you will, i go at(努力做)it hard, since i know it wont last forever。

youdao

It is hard to fathom the pain felt at the death of a child.

丧子之痛是难以体会的。

《牛津词典》

And,being one of the older skaters at 27, it feels good to be here still competing hard and representing the U.S.

VOA: standard.2010.02.23

And it's not hard to see how the heat of reaction at room temperature can be related to they heat of reaction at other temperatures.

知道室温下的反应热,如何与其他温度下的反应,热联系起来这点并不困难。

麻省理工公开课 - 热力学与动力学课程节选

So it's actually really hard to find like a boyfriend or guys who are interested in you at NYU.

所以，要想在纽约大学找一个对你感兴趣的男朋友或男生，真的很困难。

在哥伦布环岛 - SpeakingMax英语口语达人

The realization, even at age 10, that you can create real, tangible things if you think about it long enough, and work at it hard enough.

FORBES: Parents: Buy Kids' Legos, But Throw Away The Instructions

There were some good reasons and there were some dumb reasons, but we looked at it very hard.

FORBES: Fourth Circuit Holds Former Shareholders Not Liable For Corporate Tax In Midcoast Deal

Also, since it is regulated lightly or not at all, it is hard to tell whether children being taught at home are receiving an adequate education.

ECONOMIST: The growth of home-schooling