谁还会有对这份文件造假的动机，为什么？

Who would have the motive to fake such a document and why?

youdao

当我们问为什么人类会有利他主义行为时，我们想知道的是他们的动机或意图。

When we ask whether human beings are altruistic, we want to know about their motives or intentions.

youdao

当我们问为什么人类会有利他主义行为时，我们想知道的是他们的动机或意图。

When we ask whether human beings are altruistic, we want to know about their motives or intentions.

youdao