You can surf the Internet if you want to know about the 2020 World Middle School Games.

如果想了解2020年世界中学运动会的情况，你可以上网查询。

youdao

If you want to know more about space, please look through the book A Brief History of Time.

如果你想了解更多关于空间的知识，请阅读《时间简史》这本书。

youdao

If you want to know something about Confucius, you can go to The National Museum of China's official website.

如果你想了解孔子的一些事情，你可以登录中国国家博物馆的网站。

youdao

In a poker game you do not want to let your opponents know if your cards are good or bad.

VOA: special.2009.11.22

But if you want to know the answer, and I knew it, but I forget what it is-- it doesn't matter.

如果你想知道答案,我曾经是知道答案的,不过我忘掉了,这不重要

耶鲁公开课 - 心理学导论课程节选

If you want to know something like when do you hit the ground, I think it's fairly clear what you have to do.

如果你想知道车子何时落地,我想你该做什么就很明显了

耶鲁公开课 - 基础物理课程节选

If you want to know where high tech is going, never ask the current winners.

FORBES: President-Elect Fails To Understand Tech

And so if you want to know the truth, I don't know them very well.

CNN

It was a good first line if you want to know what the second line is.

NPR: Could You Be the Great American Novelist?