I don't believe in all that stuff about ghosts.

我不信什么鬼呀魂呀的。

《牛津词典》

No matter how many difficulties we have, I believe all the problems can be solved in the end.

不管我们面临多少困难，我相信所有的问题最终都能解决。

youdao

I believe God speaks to all of us in ways.

我相信上帝在用各种方式与我们所有人交谈。

youdao

"I firmly believe in the rule of law as the foundation for all of our basic rights.

VOA: special.2009.05.30

I'm sure you all do know people who believe in it.

我肯定你们都认识一些相信这个观点的人

耶鲁公开课 - 死亡课程节选

I really believe in good exercise. That's why I like to walk all the time.

我也相信锻炼对人有好处。那就是我总喜欢散步的原因。

在中央公园溜达 - SpeakingMax英语口语达人

But in all seriousness, I do believe that investing in your human capital can potentially be much more lucrative than all those other kinds of more traditional investments.

FORBES: Get Rich Investing In Your Own Human Capital

And most of all, I believe deeply in the resilient spirit of this nation.

FORBES: Magazine Article

First of all, I always believe in prayer.

WHITEHOUSE: The White House