The power of linearity is F=k1+k2 if I come across f of x, y, z equals k1 plus k2, if it is a linear equation, I don't have to go and solve it all over again.

线性的威力是,一个方程，如果它是个线性方程，那么我就不用再去解他了。

麻省理工公开课 - 固态化学导论课程节选

Two plus one equaled three before there were people; two plus one equals three now; two plus one will always equal three.

在人类出现之前,二加一就等于三,二加一现在等于三,并将永远等于三

耶鲁公开课 - 死亡课程节选

pV=RT p plus a over v bar squared times v bar minus b equals r t. All right if you take a equal to zero, these are the two parameters, a and b. If you take those two equal to zero you have p v is equal to r t.

我们就回到,也就是理想气体,状态方程,下面我们来看看,这个方程。

麻省理工公开课 - 热力学与动力学课程节选

System of linear equations. What are the equations here? Well, I could say, you know, the number of pigs plus the number of 20 chickens equals 20, right? Because we've got 20 heads. And then what else do I have?

如何解决这个问题呢？,用线性方程式的办法来解决，等式是什么呢？你应该知道,猪的数量加鸡的数量等于,对吧？因为我们有20个头？

麻省理工公开课 - 计算机科学及编程导论课程节选

And the mathematics of that equation involved a double derivative in time of x 0 plus some constant times x equals zero with some constraints on it.

那个数学方程式,包括了x对时间的二阶导数,加上常数乘以x等于,还有一些限制条件。

麻省理工公开课 - 固态化学导论课程节选

So similarly, I would find that ?2 2 equals 1 plus B S1 and this is the best response of Player II, as it depends on Player I's choice of effort S1.

同理可得?2等于1+B*S1,?2是参与人II的最佳对策,因为它与参与人I的策略S1有关

耶鲁公开课 - 博弈论课程节选

It's as though you try-- try getting upset about the fact that two plus two equals four.

这就像你在尝试-,为二加二等于四而烦恼。

耶鲁公开课 - 死亡课程节选

So he curses existence, curses God at having made him so impotent that he can't change the fact that two plus two equals four.

所以他诅咒生存，诅咒上帝让他如此无能,无能到无法改变二加二等于四的事实。

耶鲁公开课 - 死亡课程节选

Try feeling upset at your powerlessness to change the fact that two plus two equals four.

尝试为你无力,改变二加二等于四的事实而痛苦。

耶鲁公开课 - 死亡课程节选

And so he imagines that God, as omnipotent, could've made two plus two equals five.

所以他猜想，万能的上帝可以让二加二等于五。

耶鲁公开课 - 死亡课程节选

It will still be true that 3 plus 1 equals 4.

加1仍然等于。

耶鲁公开课 - 死亡课程节选

We are able to talk about the fact that two plus one equals three, but it's not as though we ever come across numbers-- number three itself--anywhere in the empirical world.

我们可与去探讨,二加一等于三的这个事实,但是我们不可能有一天真的碰到数字,在现实世界中碰到个叫"数字三"的东西

耶鲁公开课 - 死亡课程节选

Three plus one equals four, today, yesterday and forever.

加1等于，昨天是今天是永远都是。

耶鲁公开课 - 死亡课程节选

We all do believe something makes it true that two plus one equals three, but it's not the fact that empirical objects-- We don't do empirical experiments to see whether two plus one equals three.

我们都相信有些东西,使2加1等于3是正确的,但这不是说现实的东西,我们不会在现实中做实验,去看看二加一是不是等于三

耶鲁公开课 - 死亡课程节选