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

To figure out even what this thing is, let alone how to use it properly. So, you know, I'm sympathetic.

就连认出这是什么东西（都很困难），更别说正确应用它了，所以我很同情这点。

经常犯的失误 - SpeakingMax英语口语达人

You might think -- and this board is -- and you know what, let's use the computer because it will erase more cleanly than chalk.

你可能会想--这个板子是--你们懂得，让我们使用电脑,因为它能比粉笔擦除地，更干净些。

哈佛公开课 - 计算机科学课程节选

So maybe you could figure out how to use what we know about molecular biology, to engineer a new virus that's still immunogenic, but not pathogenic any longer.

也许你能指出如何使用,分子生物学的有关知识,来设计一个既能产生免疫性,但又不再有致病性的新病毒

耶鲁公开课 - 生物医学工程探索课程节选

But you agree that there is no reason why somebody else couldn't come along and say, "You know what, I want to use a different set of axes.

但是你们得认识到,没有人会站出来说,"我想要用一套不同的坐标系

耶鲁公开课 - 基础物理课程节选

Don't get hung up on what does the English word invisible mean, Let's just ask oursleves what notion of invisibility, if you'll use the word you know, between these three ways, what notion did Socrates' arguement turn on.

不要专注于,无形这个词到底是什么意思，我们就问问自己,无形这个概念，如果这个词可以，有这三种解读方法，苏格拉底所指的到底是哪个。

耶鲁公开课 - 死亡课程节选

That goes back to that idea of sort of discipline coding. It's easy to have assumptions about what you think are going to come into the program when you writ it. If you really know what they are use them as search, but if you think there's going to be some flexibility, you want to prevent the user getting trapped in a bad spot, and exceptions as a consequence are a good thing to use.

这又回到了规范编码的想法上来了,在你写代码的时候考虑,什么会进入你的代码的思考是简单的,如果你真的知道,他们是用他们来做搜索的,而你希望有一定的灵活性，你想要阻止用户,陷入一个艰难的境地,那么异常是非常实用的。

麻省理工公开课 - 计算机科学及编程导论课程节选

And I don't know, just like the ability to use what's around you.

运用你拥有的所有表达能力，

教英语 - SpeakingMax英语口语达人

Well in C and other languages that we'll see this semester, you use what's called the for loop, and this as syntax isn't quite as straightforward but once you know what to look for, it's very easy to understand.

在C语言和一些我们这学期将要接触的编程语言中，你将会用到所谓的for循环，也许作为一种语法规则，它看起来不是那么的通俗易懂,但是你一旦知道曲中奥妙，就不难理解了。

哈佛公开课 - 计算机科学课程节选