By 35, 000 years ago the Neanderthals, a sub-species of human whose own origins were in Africa, were mostly extinct.

到35,000年前，尼安德特人这一起源于非洲的人类亚种几乎已经绝迹。

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By 35,000 years ago the Neanderthals, a sub-species of human whose own origins were in Africa, were mostly extinct.

到35,000年前，尼安德特人这一起源于非洲的人类亚种几乎已经绝迹。

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Biological community there is a consensus, that is no predators animals are mostly extinct, and the enemy is more powerful, the evolutionary speed is faster, stronger ability to adapt.

生物界有一个共识，那就是没有天敌的动物多半会灭绝，而敌人越强大，其进化速度则越快，适应能力也更强。

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Any of various small, mostly tailless, extinct flying reptiles of the order Pterosauria that existed during the Jurassic and Cretaceous periods.

任一种小型已灭绝的翼龙目的飞行爬行动物，它们绝大多数都没有尾巴，生活在侏罗纪和白垩纪之间的那段时期。

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Any of various small, mostly tailless, extinct flying reptiles of the order Pterosauria that existed during the Jurassic and Cretaceous periods.

任一种小型已灭绝的翼龙目的飞行爬行动物，它们绝大多数都没有尾巴，生活在侏罗纪和白垩纪之间的那段时期。

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