哦，难道你看不出来，如果这是个秘密该有多好吗？

Oh, don't you see how much nicer it would be if it was a secret?

youdao

如果不出意外，我明天去看你。

Unless something unexpected happens, I'll see you tomorrow.

《牛津词典》

如果你不出门结识新朋友，你的生活就容易变得刻板乏味。

If you don't go out and meet new people, it's easy to get into a rut.

《牛津词典》

If it were just a little bit different I could say, all right, I have a different approximation. But when it's this different, something is wrong. Right?

但是如果仅仅有点差异的话,我可以认为没什么大问题,我得到了一个不太一样的估算，但这确实有差异，出问题了对不对？

麻省理工公开课 - 计算机科学及编程导论课程节选

If he splits his head open and there's blood everywhere, I'm less likely to laugh unless I don't like him or something.

如果他摔个头破血流，我就笑不出，除非我很讨厌这个人。

耶鲁公开课 - 心理学导论课程节选

If it was non-reversible, I would be allowed to put an initial point and a final point, but I wouldn't be allowed to put a path between them like this, connecting them together.

如果是不可逆过程，我可以画出过程的初态点,和末态点，但是我不能再像这样,画出连接这两个点的，路径曲线来。

麻省理工公开课 - 热力学与动力学课程节选