我要是知道点儿什么，我肯定告诉你，可我不知道。你现在说的对我还是新闻呢。

I'd certainly tell you if I knew anything, but I don't. What you're saying is news to me.

《柯林斯英汉双解大词典》

要是他们告诉我说‘Barbara，你现在患上癌症了，可我们这不知道它是不是致命的’，我也还是不会做任何改变。

If they'd said to me, 'Barbara, you've got cancer and it might kill you and it might not,' I wouldn't have done things any differently.

youdao

每逢电脑闹毛病的时候，我就渴望自己能有一台手提电脑，可我知道这个梦想对于现在的我来说，简直是幻想，甚至是空想。

Every time the computer trouble problems, I would very much like to have a laptop computer, but I know that this dream for me for now is simply fantasy, or even utopian.

youdao