No, we call that work positive work. All right, so that means we need to put a negative sign right here, by convention.

历史上有过不同的习惯，这里我们规定,如果环境对系统做功。

麻省理工公开课 - 热力学与动力学课程节选

And then we calculate changes, the convention is understood with respect to what is the zero, right.

然后我们计算改变,这个约定就是用来规定零点的位置的。

麻省理工公开课 - 热力学与动力学课程节选

Now I know how you like to tweet your female relatives "It says right here and we signed it."

我知道，你会在推特网上给你的女性亲友留言说,“这是法律条约规定的，我们已经签署了的“

普林斯顿公开课 - 人性课程节选

The formal parts of a game are this. We need players -- and while we're here let's develop some notation.

博弈由以下要素组成,参与人,首先我们得规定一下表述法

耶鲁公开课 - 博弈论课程节选

So now after all these stupid setup, we can finally dive in to the actual program.

把这些规定的东西写好后,我们才能写真正的程序。

哈佛公开课 - 计算机科学课程节选

They would say, no way are we going to do that; our rule says we can't lend on a LTV of higher than 60%.

他们会说,我们不会这样做,我们规定贷款价值比不能超过60%

耶鲁公开课 - 金融市场课程节选

He replied, once we verified there was no danger to a member's property, we had no choice but to back off according to our rules.

他回答道，根据公司规定，一旦确认会员财产无损，我们只能袖手旁观。

耶鲁公开课 - 公正课程节选

You can't be forced to accuse yourself, what we could call the Fifth Amendment.

不能被逼认罪，这也是我们宪法第五修正案规定的。

耶鲁公开课 - 政治哲学导论课程节选

Now all we have to decide is,was the branching rule satisfied or violated?

我们要决定的只是分支的规定是否被破坏？

耶鲁公开课 - 死亡课程节选

So if delta v is negative, in this case delta v is negative, OK, delta v is negative, pressure is a positive number, negative times negative is positive, work is greater than zero.

也就是当活塞,压缩气体的时候，做的功是正的，按照这一规定,我们需要在这里，加上一个负号，这是习惯规定。

麻省理工公开课 - 热力学与动力学课程节选

There's some rule in the Constitution, but never mind, let's pretend that's not there.

宪法里面有规定,但没关系,我们假装没有那个规定

耶鲁公开课 - 博弈论课程节选

This is the concept that is in the law and the reason we have it in the law is that it works to produce prosperity and to produce the things we need, like clothes, medical service, homes, whatever.

这是法律规定的概念,之所以在法律中有这样的规定,是因为这是繁荣的温床,才能生产出我们需要的东西,像衣服,医疗服务,家用等等

耶鲁公开课 - 金融市场课程节选

Convention, OK, this negative sign is just a pure convention. You just got to use it all the time. If you use an old textbook, written when I was taking thermodynamics, they have the opposite convention, and it's very confusing. But now we've all agreed on this convention, and work is going to be with the negative sign here.

系统对外界做功的符号为负,这就是我们,在本课中的规定，纯粹出于统一符号的需要，有些教科书中，可能会使用相反的符号规定,注意不要混淆了，这门课上,我们将一直使用。

麻省理工公开课 - 热力学与动力学课程节选

If you want to go live in the state of nature, that's fine, but you can't take anything from the government because by the government's terms, which are the only terms under which you can enter the agreement, say that you have to pay taxes to take those things.

如果你想生活在自然状态下，没问题，但你就不能享受任何政府福利了,因为根据政府组建条款，也是我们同意组建政府的唯一条款，规定只有你缴税了才能享受那些福利。

耶鲁公开课 - 公正课程节选

But since we stipulated that Shelly Kagan's soul is going to end up in Lefty, Righty is not going to wake up.

但我们已经规定Shelly，Kagan的灵魂会进入小左，小右会永远长眠。

耶鲁公开课 - 死亡课程节选