在分析了这些笑声之后，研究人员得出结论，人和大猩猩的笑声源自共同的祖先——他们生活在距今一千万年前。

After analyzing the sounds, they concluded that people and great apes inherited laughter from a Shared ancestor that lived more than 10 million years ago.

youdao

在分析了这些笑声之后，研究人员得出结论，人和大猩猩的笑声源自共同的祖先——他们生活在距今一千万年前。

After analyzing the sounds, they concluded that people and great apes inherited laughter from a Shared ancestor that lived more than 10 million years ago.

youdao