So it's not too much of a stretch to claim that pre-human forms of laughter may exist.

所以我们就不难延伸，人类初期也可能存在着表示笑声的方式。

youdao

And he has a theory about early life and perfectly appropriate as far as one can tell of what pre-human form he studied.

他有一个有关早期生命的理论，一般人都会觉得很正常，他研究人类之前的生命形式没有什么不合适。

youdao

One model 'envisions the pre-human ancestor as a terrestrial knuckle-walker, a behavior frequently used by our closest living relatives, the African apes,' the report said.

一个模式，‘把人类祖先设想为拳步而行的陆栖动物，其动作非常接近我们的近亲非洲大猩猩，’该报告说。

youdao

And he has a theory about early life and perfectly appropriate as far as one can tell of what pre-human form he studied.

他有一个有关早期生命的理论,一般人都会觉得很正常,他研究人类之前的生命形式没有什么不合适。

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Keynes chose Freud, mostly, and saw economies as essentially being driven by unconscious, pre-human impulses (animal spirits).

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Religion comes from the period of human pre-history where nobody - not even the mighty Democritus who concluded that all matter was made from atoms - had the smallest idea what was going on.

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Because there has been very little pre-clinical data published on human iPS cells.

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