Early humans seem to have played a major role in finishing offnine other mammal species that weighed over a tonne.

早期人类似乎扮演了终结者的角色，使其他九种超过一吨的哺乳动物彻底从地球上消失。

youdao

The early humans also found a practical use for their discovery, such as storing things like grain—although there were drawbacks.

早期人类也找到了他们的发现的实际用途，比如储存像谷物这样的东西——尽管还有一些缺点。

youdao

If early humans hadn't moved and intermingled as much as they did, they probably would have continued to evolve into different species.

如果早期人类没有像以前那样频繁地移动和融合，他们可能会继续进化成不同的物种。

youdao

And,the professor suspects that early humans liked ivory flutes more because the instruments produced a deeper,richer sound.

VOA: special.2009.08.18

There may be uncertainties of that nature but certainly not the uncertainties of early humans.

也许还有其他的不确定因素,但这绝不等同于早期人类的不确定因素

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Art seems to have been important to these early humans.

VOA: special.2009.08.18

Finds from Java suggest early humans reached South-East Asia by 1.6 million years ago.

BBC: 'Peking Man' older than thought

These environments would have been rich in mammals that could have been hunted or scavenged by early humans.

BBC: 'Peking Man' older than thought

And they say the differences may have evolved millions of years ago when early humans became hunter gatherers.

BBC: Art appreciation 'a gender issue'