如果我们不马上卸货，这些粮食在仓中将开始腐烂。

If we don't unload it soon, the grain will start rotting in the silos.

《柯林斯英汉双解大词典》

你时间紧吗？如果不紧的话，我建议我们一起吃午饭。

Are you pressed for time? If not, I suggest we have lunch.

《柯林斯英汉双解大词典》

如果我们不结束战争，战争将会终结我们。

If we don't end the war, it will end us.

youdao

If the student hasn't mastered the basic concept, we will make sure that the grade scheme gives a failing grade.

如果学生没有掌握基本的概念，我们会确保,成绩将会不及格。

麻省理工公开课 - 固态化学导论课程节选

So, if we have a high intensity, we're talking about having more photons per second, and it's important to know also what that does not mean.

所以，如果我们有一个高强度，我们就是在讨论每秒钟,有更多的光子数，同样理解它不代表什么,也是很重要的。

麻省理工公开课 - 化学原理课程节选

If you don't do that, there's a danger you will learn something you don't have to, and we don't want that.

但是如果你不来,你就有可能学到一些不重要的知识,我们当然不希望这样

耶鲁公开课 - 基础物理课程节选