要确保你知道如何做。

Be sure you know how to do so.

youdao

确保你知道考试要考什么，如何准备总是好的！

It's always a good idea to make sure you understand what's going to be on the test and know exactly how to prepare.

youdao

你要清楚知道这些不同如何影响到你的健康。

You need to fully understand how these differences impact your health.

youdao

Depending on what kind of chemistry you go in to, you might accidentally memorize parts of the table, which is fine, but what you really want to know how to do is know how to use the periodic table.

取决于你今后从事哪个方向的化学研究，你可能会不经意地记住周期表的某一部分，这就够了，但是要注意,你真正需要知道的是如何使用元素周期表。

麻省理工公开课 - 化学原理课程节选

you have to be well-informed as to how to go about being an actor.

你要消息灵通，知道如何当演员。

想成为明星吗？ - SpeakingMax英语口语达人

And the question is, so how many pigs does he have, and how many chickens does he have? Wow. What a deep problem, right? But you're going to see why we're going to use this in a second. So you know how to solve this, this is a fifth-grade problem, right?

为了避免歧义，这些猪和鸡都是健全的,现在问题是它到底有多少只猪和鸡呢？,多深刻的一个问题啊，对吗？,但是你将要看到的是,我们为什么要举这个例子,你知道如何解答这个问题？

麻省理工公开课 - 计算机科学及编程导论课程节选