So, if you use a black lamp or something and you excite something up to a higher energy level and then it relaxes back down to its lower energy state, it's going to emit a new wavelength of light, which is going to be visible to you.

如果你用一个紫外灯或别的,东西把某种分子激发到,更高的能级，然后它会掉回,到低能级，它就会释放,一个新的波长的光,这个光是可见的。

麻省理工公开课 - 化学原理课程节选

If you want to make a cheap soup, you use a very cheap chicken.

如果你想做份便宜的汤，就用便宜的鸡肉。

问上门厨师 - SpeakingMax英语口语达人

If you use a navy, your state will be a democracy in which the lower classes are dominant.

olitea政体是柏拉图设想的完美政体 如果以海军为主力,那一定是以草根为基础的,民主政体城邦

耶鲁公开课 - 古希腊历史简介课程节选

The standard library, that first line of code, it's not strictly necessary but any time you use a function, a tool that someone else wrote that lives in that so called library, you do need that include line as we'll see.

标准库函数--第一行代码，严格来说，不是每次都要写的，但是一旦你调用某个别人写，的函数，而这个函数又恰巧位于标准库里面,你就要像我们看到的这样，把它include进去。

哈佛公开课 - 计算机科学课程节选

So if it's not a cell that's going through division you can't use a retrovirus to express the protein.

如果细胞不在分裂阶段,你就不能用逆转录病毒来表达某个蛋白

耶鲁公开课 - 生物医学工程探索课程节选

But in terms of SI units, which become much more useful if you're actually trying to use intensity in a problem and cancel out your units, we're just talking about joules per second is what intensity is.

但是用国际单位制，这个变得越来越有用了,如果你实际上在使用强度,来解决问题和约化单位，我们仅仅讨论每秒钟的焦耳,这就是强度。

麻省理工公开课 - 化学原理课程节选

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

You have a nice grid pattern and you can use a city block metric to add up the number of blocks between people's doors.

整个城市呈格网状,你可以数数,人们相隔多少个街区。

耶鲁公开课 - 心理学导论课程节选

You take a shower, you use this soap, the fat's all gone.

洗个澡,喝碗汤,脂肪就少了

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Now, if you're an engineer, and you use the ideal gas law to design a chemical plant or a boiler or an electrical plant, you know, a steam plant, you're going to be in big trouble.

比如说锅炉，蒸汽机,我们会遇到一个大问题：,我们设计的机器将无法运作，因为对大部分实际气体。

麻省理工公开课 - 热力学与动力学课程节选

When you want a horse, use a horse.

如果你想要一匹马,就去弄一匹马

耶鲁公开课 - 基础物理课程节选

And you can either, like pay a subscription for a year and then you can use it as much as you want,

你可以付一年的押金，然后你可以随便怎么用，

伦敦的蓝色自行车 - SpeakingMax英语口语达人

So if you want to use a Revised Standard Version, that is other than the New Revised Standard Version,that's fine.

如果你想要修订标准版，而不是新标准修订版，也可以。

耶鲁公开课 - 新约课程节选

He always kept his poise to the top branches, climbing carefully with the same pains you use to fill a cup up to the brim, and even above the brim.

他始终稳住身子，不摇不晃地，直到那高高的顶枝上----小心翼翼地,往上爬，那全神贯注的样儿，就像，把一杯水倒满，满到了杯口，甚至满过了边缘。

耶鲁公开课 - 现代诗歌课程节选

It doesn't tell you this is my hometown and this is Japan and so forth. It gives you a lot of visual cues that you use in my personal journey to see what Japan is like on a personal level.

就在于车上没有人说话，它不直接告诉你这是,我的家乡，这是日本等等，它给你许多,视觉提示，你会通过这些提示,从个人的角度看日本。

麻省理工公开课 - 媒体、教育、市场课程节选

Oh I forgot. Do any of you follow Ja, ? use a nickname?

我忘了，你们有谁也是这样么，用昵称的？

麻省理工公开课 - 电影哲学课程节选