So, Newton did not ever tell you what the expression for force is in a given context.

牛顿从来也没有告诉过你,在这种情况下力的表达式

耶鲁公开课 - 基础物理课程节选

It's great for showing that you've already expressed something and you want to emphasize that point to you are conversant.

在表明你已经表达过某个观点并且想要再次强调的时候，这个句型非常有用。

That's what课堂 - SpeakingMax英语口语达人

All of that is a way of simply saying it was deep and abiding and well-rehearsed thousands of pages were written in defense of slavery.

所有我提到过的著作都是,为了表达深入人心的,持久不变的奴隶制,上千页的著作都是对其的辩护

耶鲁公开课 - 美国内战与重建课程节选

This is introducing a gene, it's a natural gene but it's not - it's a natural gene that's found in humans and is actually expressed all over your body in different levels, but you're concentrating it or over expressing it in one particular region of tissue in order to have a particular effect.

通过导入一个基因,这是一个天然基因但--,是一种于人体内发现的天然基因,在全身细胞中都有不同程度表达,但需要集中在组织的某一特定区域,表达或过表达,才能达到特定疗效

耶鲁公开课 - 生物医学工程探索课程节选

You use this pattern whenever you want to express that you have experienced something in the past previously.

每当你想表达你之前已经经历过某事的时候，你就可以用这个句型。

I've already 课堂 - SpeakingMax英语口语达人

Again as I said this is my version of it, but you can see, every one of the examples we've used so far has that pattern to it.

形成了迭代的思想，我还是想用我的话，来表达表达，但是你们可以看到,我们讲过的每个例子都用到了这个模式。

麻省理工公开课 - 计算机科学及编程导论课程节选

The point that was just raised here is I had said before that everybody who's neurologically normal comes to acquire and learn a language.

我这里向表达的关键是,我之前说过所有神经上正常的人,都会掌握和习得一种语言

耶鲁公开课 - 心理学导论课程节选

If you have not seen the calculus that I'm about to use on the board, or more likely, if you've forgotten it since high school, don't panic.

如果你们没有见过我将要,在板书上写的表达式,或者说,高中毕业你们就忘了,没关系

耶鲁公开课 - 博弈论课程节选

There's a Greek in the fifth century who says the same thing.

一个五世纪的古希腊人就表达过同样观点

耶鲁公开课 - 古希腊历史简介课程节选

We use this pattern to emphasize a point that has possibly been expressed in the past.

我们用这个句型来强调过去曾经表达过的一种观点。

That's what课堂 - SpeakingMax英语口语达人

You've heard about RNA interference, for example, and that is the process of stopping this, to stop a gene from being expressed.

比如说,你们听说过的RNA干扰,就是一种阻止,基因表达的手段

耶鲁公开课 - 生物医学工程探索课程节选

You're taking a normal gene and you're over expressing it or expressing it more abundantly than normal in one particular spot of the body to have an effect.

我们在讨论一个正常基因的过表达,也就是在体内某一点的表达量,大大超过正常水准从而产生疗效

耶鲁公开课 - 生物医学工程探索课程节选

You do that by expressing the genes in the mice in the way that I described on the last slide and it's shown in a little bit more detail on this slide.

按照我上张幻灯片讲过的方法,在小鼠中表达外源基因,这张幻灯片中对此有更详细的表述

耶鲁公开课 - 生物医学工程探索课程节选