Lies, how can I believe you.

谎言，我要怎样才能再去相信你。

youdao

If you believe you can make her happy, I won't stand in your way.

如果你相信你能使她幸福，我不会妨碍你的。

《牛津词典》

I believe you can do it! Try to smile often.

我相信你能做到！试着多笑笑。

youdao

I believe I can speak for the whole nation when I say this and compliment you for your work.

VOA: standard.2009.04.12

Since I say you can believe you're going to die, yet you can't picture it from the inside.

既然我说你可以相信人是会死的，但是你无法想象那种感受。

耶鲁公开课 - 死亡课程节选

I can't believe you don't want our walls to be red.

真不敢相信你不愿意把我们的墙壁刷成红色。

How about 实战 - SpeakingMax英语口语达人

There are a couple of barges that are starting to work right away, and I can verify this for you, but I believe the first place they're going to start working is somewhere around the Chandeleur Islands because the sand source is close enough where they can get to work right away.

WHITEHOUSE: Daily Press Briefing

You know, I remember when my first son was born, and I was like, oh, my gosh, I can't believe you're finally here.

NPR: Obama Urges Moving Beyond Bush Era

But as an employee, I believe you can progress much better, both financially and in skills, by staying in one place instead of jumping around.

FORBES: 10 Reasons To Stay At A Job For 10 Or More Years