直接研究人类进化很明显是不可能的，代代延续的时间花费太久。

Studying human evolution directly is obviously impossible. The generation times are far too long.

youdao

直接研究人类进化很明显是不可能的，代代延续的时间花费太久。

Studying human evolution directly is obviously impossible. The generation times are far too long.

youdao