That's the endowment of X and Y of a certain person,

这是某个人用来购买X和Y的财产
eix and eiy.

eix和eiy
So this person, let's say it's this top guy

这个人最上面这个人
he has a certain utility function, he's got a certain endowment.

他有一个效用函数和财产
Maybe there's somebody else over here who I can put in a different color.

在这还有一个我用其他颜色表示的人
Aha, I think pink is a good color.

粉色不错
So another person might be over here and this is ejy and ejx.

他可能在这个点财产是ejy和ejy
So J has a lot more of y, and I has a lot more ofx.

J的y多我的x多
They're two different people,

有两种人
but you could imagine not two people you could imagine 150 of you

设想不只两个人设想一百五十人
with different endowments and different utility functions,

有不同的财产和效用函数
or 300 million of you with different endowments and different utility functions.

或者三百万有不同财产和效用函数的人