我实在无法相信，你是我一个成真的梦想。

I can't believe it, you're a dream comin 'true.

youdao

你开玩笑吧。我无法相信你是她妈妈。

You're kidding. I can't believe you're her mother.

youdao

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

So your position may be not believed, and I want to claim that that's connected to the idea that you can't commit yourself to your policies.

也就是说选民未必相信你的立场,我要指出的是这与,你无法执行相应政治策略是相关的

耶鲁公开课 - 博弈论课程节选