你必须明白的是，尤其是在一些东方文化中，这类补药是传统医学的一部分。

What you must understand is that those supplements, especially in some Eastern cultures, are part of a medical practice tradition.

youdao

当然，你必须明白我是在从一个竞争对手的角度讲话。

Of course, you must understand that I am speaking from the point of a competitor.

youdao

吃药可能对你的健康十分危险，你必须明白你在做什么。

Taking medicine can be hazardous to your health. You have to know what you're doing.

youdao

Usually when you know why it's not working, it's obvious what you have to do to make it work.

通常你明白了出错的原因后，很明显你必须让程序正常运行起来。

麻省理工公开课 - 计算机科学及编程导论课程节选

The challenges that... First of all, you got to understand that learning a language takes time.

挑战就是，首先，你必须明白学习一门语言是件耗时间的事。

学第二外语的时候 - SpeakingMax英语口语达人

That's what happened in '81-82 but you have to remember that times are different.

这就是81-82年发生的事情2,但是你必须明白时代不同了。

耶鲁公开课 - 金融市场课程节选