over millennia

Whiteley said: 'We aim to understand the echolocation process that bats have evolved over millennia and employ similar signals and techniques in engineering systems.(怀特利表示：“我们的目标是理解经过N多年的进化后的蝙蝠的回声定位法的过程，以便能把类似的信号或技术用在我们的工程系统上。”)

The sense you gain is that while the circumstances of mankind have changed dramatically over the millennia, human nature is relatively constant.(你从中体会到：人类的生活环境在几千年间发生了翻天覆地的巨变，人性却相对稳定。)

Lack of oxygen inhibited decay, and heat and pressure over millennia turned the wood into solid quartz colored by impurities like iron, carbon, and manganese.(缺乏氧气的抑制衰减，热量和压力，几千年来，把木材变成坚实的石英色彩的杂质一样，铁，碳，锰。)

Falling water levels are not the only changes at Lake Suguta over the past several millennia.(在过去的几千年里水位下降并不是苏加塔湖唯一的变化。)

So over millennia, we developed a reward system that causes us to seek and change our behavior so we can capture rewarding things to counterbalance the pain.(所以在这一千年中，我们发明了这项奖励制度，它能使我们寻找并且改变我们的行为以至于我们能够获得奖励的东西来平衡那些疼痛。)

By Darwinist thinking, giraffes got their long necks over millennia because genes for long necks had, very slowly, gained advantage.(据达尔文理论，长颈鹿几千年来的长脖子，是由于长脖子基因在漫长的演变过程中，逐渐占据上风。)

He and his team suspect that the microbes survived over the millennia thanks to an algae called Dunaliella, which also became trapped and encased in the salt.(他与他的团队推测这些微生物之所以可以存活一千年是由于一种属于杜氏藻的海藻，这种海藻也被困在盐中被盐包裹。)

The descendants of long-time urban dwellers show increased genetically-driven resistance to tuberculosis, due to evolutionary selection pressure over millennia. Christopher Intagliata reports.(长期生活在城市的居民，其后代的遗传基因里，对肺结核的抵抗力更强。究其原因，是几千年来城市生活进化选择的压力为人类所做出的贡献。)

We have been watching grisly death on screen for over a century, and for millennia on stage.(我们在银幕上观看可怕的死亡已经超过一个世纪了，在舞台上也超过了一千年。)

The descendants of long-time urban dwellers show increased genetically-driven resistance to tuberculosis, due to evolutionary selection pressure over millennia.(长期生活在城市的居民，其后代的遗传基因里，对肺结核的抵抗力更强。)