全部

1·Research suggests humans, Neanderthals interbred.

研究证实人类和尼安德特人有过杂交。

2·Such percentages provide clues on how modern humans migrated and interbred.

这些百分数提示了我们现代人迁移和通婚的方式。

3·They concluded that humans must have interbred with Neanderthals after leaving Africa.

科学家得出结论，人类一定是在离开非洲大陆后和尼安德特人进行了混种繁殖。

4·And, perhaps no surprise, some ancestors of modern humans also interbred with Denisovans.

没什么奇怪的，一些现代人的祖先还混交了丹尼·索瓦人。

5·Later, the ancestors of East Asians - but not Europeans - interbred a third time with Neanderthals.

后来，东亚人的祖先——不是欧洲人——第三次混交尼安德特人。

6·The first encounter happened when the common ancestor of all non-Africans interbred with Neanderthals.

第一次相遇发生在当所有非非洲人的共同祖先与尼安徳特人发生繁衍行为后。

7·Scientists suspect that Neanderthals and Denisovans were not the only extinct races our ancestors interbred with.

科学家怀疑尼安德特人和丹尼索瓦人不是仅有的我们祖先与之混交而后灭绝的人种。

8·Polar bears and brown bears became distinct species around 150, 000 years ago, but have occasionally interbred ever since.

北极熊和棕熊在大约15万年前进化为不同的物种，但是自那时起开始出现偶然的杂交。

9·Before disappearing, however, they interbred with our forebears on at least several occasions, and today we carry DNA from these encounters.

然而，他们消失前，至少数次曾与我们的祖先混种繁衍，今天我们携带的DNA就是来自他们的邂逅。

10·Competing theories place them either as an archaic variant of our own species, Homo sapiens, with whom we interbred, or as a separate species altogether.

竞争理论将它们作为远古时我们的祖先——智人的一种变种，智人与他们杂交，或者是一个单独的物种。