我告诉他，如果他退出那么他要自负其则。

I told him if he withdrew it was on his own account.

《柯林斯英汉双解大词典》

如果没有，则执行错误退出。

If not, do an error exit.

youdao

如果你生活的地方春雨绵绵，则必定也有水坑。

If you live where spring rains are common, so are puddles.

youdao

If the surprises are too great, then they induce overstrain and we throw away the book in frustration and despair.

如果令人惊讶之处过多，则会导致读者过劳,最后因失望或绝望而抛开它。

耶鲁公开课 - 文学理论导论课程节选

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

So, if we're going to go to the moon, we're going to go to Mars,we want to be able to produce oxygen, structural metals and photovoltaic materials from in situ resources.

如果我们要去月球上，我们要去火星上，我们则必须要制造,氧气，结构金属和光电材料,就在原地制造。

麻省理工公开课 - 固态化学导论课程节选