But there are also external benefits of your education. Everyone is actually better off.

但是教育也有一些外在好处。它让每个人的实际境况都会变好。

In some cases, the external benefits are perceived to be so high that the government essentially takes over the market.

在某些情况下，外部利益被认为非常高，以至于政府基本接管了它的市场。

Externalities are situations when there's an external costs or external benefits that accrue to other people or society as a whole.

外部性是指外部成本或外部利益对其他人或整个社会产生影响的情况。