I raise money for public schools.

我为公立学校募捐

I don't know what that means.

那什么意思

We're looking for a serial killer

我们寻找的是一个连环杀手

And he's not going to want to stop with this plane.

而他不会就此罢手

Well, that's the tricky part.

比较难办

Well, I guess I'm pretty lucky then.

我猜我们很幸运

And medical schools and the public health community

当时的医学院和公共卫生团体都教导大众

one epidemic disease after another,

陆陆续续被彻底清除

that pertains to the topic we're talking about today,

与我们今天谈论的话题相关

The UN instead of just settling for a broad goal like this

联合国不仅仅是设定个大体上的目标

and acting on all of them at once

并且一次性对整个群体做免疫尝试

that we eradicated smallpox.

根除小儿麻痹症