从这个角度来说, 奇虚乐陨石撞击事件可说是人类演化的推手.

In this sense, the Chicxulub crater is the crucible of human evolution.

由于科学家已更清楚地了解尼安德特人与人类演化的时间，他们已能圈定可能曾是我们共同祖先的目标。

Now that scientists have a better idea on when Neanderthals split from humans, they can zone in on which species might have been our common ancestor.

气温变化周期是根据氧同位素测定的大量远古温度记录而推演出来的。气温变化周期与人类演化进程的对照，暗示“黄金时期”与气候急剧波动而短暂的时期相对应。

What marked out this period was a greater range of recorded temperatures, suggesting it was a time of rapid but short-lived fluctuations in climate.

从这个面向来说，我们离人类演化的结果并不远。

In that regard, our apple has not fallen far from the evolutionary tree.

它们可能没有动词、名词和过去分词，但是鸟类挑战只有人类演化出语法规则这一观念。

They may not have verbs, nouns or past participles, but birds challenge the notion that humans alone have evolved grammatical rules.