Since the evolution, human being can no longer living alone in nature, human beings are gregarious.

类人猿自从进化为人后，就再也无法以单个形式单独生活在自然界里，人类是群体生活的。

youdao

Since the evolution, human being can no longer living alone in nature, human beings are gregarious.

类人猿自从进化为人后，就再也无法以单个形式单独生活在自然界里，人类是群体生活的。

youdao