如果适合你的话，光着身子睡觉并不是一个坏主意。

Sleeping in the nude, if it suits you, is not a bad idea.

《柯林斯英汉双解大词典》

如果不是你，我今天不会还活着。

If it weren't for you, I wouldn't be alive today.

《牛津词典》

如果不是你，那是谁呢？

If it wasn't you, who was it, then?

youdao

And if your answer is no, your answer will be no, then you just know you can't use this equation here.

如果不是，那就不能，你就知道，你不能用这个方程了。

麻省理工公开课 - 化学原理课程节选

false It's going to return true if it's a PAIL-indrome and false if it's a PAL-indrome. And it says true. Now maybe you're bugged by this.

如果不是会问的话则是,返回的是真值,那么你可能会觉得这个很烦。

麻省理工公开课 - 计算机科学及编程导论课程节选

It's not as though if you kill yourself you somehow bring it about that you've never been born at all.

不是说如果你自杀了就能够扭转,你出生了这个事实。

耶鲁公开课 - 死亡课程节选