They had to do something in order to not die from hunger.

为了避免死于饥饿，他们必须做点什么。

And that's why we wanted to come again but not only as travelers but in order to do something.

那也正是为什么我们还想再来的原因。不过不仅仅是作为旅行者，而是为了做些身什么。

And separates himself in order to do something about it.

把自己分离出来以便能对此做点什么。