The first, Paleo-Indian, wave more than 15,000 years ago was ancestral to all Central and South American Indians.
在一万五千多年前进行第一次迁移的是古印度人，他们是美洲中部和南部的印第安人的祖先。
The third wave, perhaps 10,000 or 9,000 years ago, saw the migration from North-east Asia of groups ancestral to the modern Eskimo and Aleut.
第三次浪潮大约发生在一万或九千年前，见证了东北亚的祖先群体向现代爱斯基摩人和阿留申人的迁移。
Perhaps the most striking sign of mobility is the fact that by the third millennium B.C., most pastoralists in this huge region spoke related languages ancestral to the modern Indo-European languages.
可能在人口流动性方面最具说服力的标志是，公元前3000年，在这片广袤的土地上大部分牧民讲的相关语言，现代印欧语系就从中发展而来。
Fishes having paired fins resembling limbs and regarded as ancestral to amphibians.
有一对类似于脚的鳍且被视为是两栖动物祖先的鱼类。
A fossil cannot be ancestral to something older than itself any more than a daughter can give birth to her own mother.
一块化石不可能衍生出比自身历史更长的东西，这就如同一个女儿不可能生下自己的母亲。
Until now, fossils dated to 1.9million years ago - and mostly attributed to Homo habilis and Homo rudolfensis - have been undisputed considered ancestral to Homo erectus.
到目前为止，我们普遍承认那些可追溯至190万年前化石是直立人的祖先，它们大多数是“能人”和“卢多尔夫智人”。
Itself the remnant of a strange evolutionary event (the merger of an ancient bacterium with the cell ancestral to all plant and animal life), it also carries the imprint of more recent evolution.
它本身就是奇异的进化事件的遗迹(古代细菌和细胞—所有动植物的祖先细胞——的融合体)，同时，它还带着比较近期进化的印记。
Perhaps that is why we explore the starry skies, as if answering a primal calling to know ourselves and our true ancestral homes.
也许这就是我们探索星空的原因，仿佛在回应一种原始的召唤，去了解我们自己和我们祖先真正的家园。
Of today's different groups of algae, green algae are probably the most similar to ancestral plants.
在今天的众多藻类中，绿藻可能与植物的祖先最为相似。
If for any reason this does not happen, the ancestral feature may not disappear, leading to an atavism.
如果因为任何原因，这些事情没有发生，祖先的种种特性也许就不会消失，从而导致返祖现象。
Fossils show how the nostrils of ancestral whales moved from the tip of the snout to the top of the head.
化石展现了鲸鱼的鼻孔是如何一步步地从它们祖先长鼻子的末端跑到头顶上去的。
An ancestral species might have adapted to exploit a particular ecological niche on one island and then traveled over water to colonize other islands.
一个原始物种可能已经适应了利用一个岛屿上特定的生态位，然后在水上迁徙到其他岛屿定居。
New migrant wealth also threatens to shake up the ancestral balance of power.
新的民工财产也威胁着要动摇祖传的权力平衡。
I recognise that in a genuine peace we'll be required to give up parts of the ancestral Jewish homeland.
我承认，为了获得真正的和平，要求我们放弃部分祖传的犹太故土。
Australopithecus was a group of early hominids that is reckoned to be the ancestral genus of Homo, to which modern man belongs.
南方古猿是早期原始人类的一部分，被认为是祖先人种，现代人就由此而来。
The network consists of hundreds of companies across Asia owned and managed by overseas Chinese entrepreneurs with extensive ties to their ancestral homeland.
该网络由亚洲地区的数百家企业构成，这些企业由海外华人企业家拥有和管理，他们与其祖国有着广泛的联系。
Now suppose they marry men from other Israelite tribes; then their inheritance will be taken from our ancestral inheritance and added to that of the tribe they marry into.
她们若嫁以色列别支派的人，就必将我们祖宗所遗留的产业加在她们丈夫支派的产业中。
The Chuseok festival, a harvest celebration, sees millions of people engage in a mass exodus back to their ancestral villages.
在秋夕，一个庆祝丰收的节日，上百万人加入了返乡祭祖的队伍之中。
My friends always ask me this question and I don't know how to answer them. They want to know why we left our ancestral house.
我的朋友都问我这个问题，不过我不知道怎么回答，他们都问，为什么我们离开我们祖先的房子到这里来呢？
These mutations, which occurred after the protein evolved its new function to bind to cortisol, would cause structural clashes within the protein if it were returned to its ancestral state.
在蛋白质进化到具有与皮质醇结合的新功能后产生的这些突变，如果蛋白质返回到原始状态，会导致其结构上产生冲突。
Millions of monarch butterflies travel to ancestral winter roosts in Mexico's shrinking mountain fir forests.
数百万只王蝶前往祖传的冬季栖息地——正在退缩的墨西哥冷杉林。
But it will have to be a new English, still in full communion with its ancestral home but altered to suit its new African surroundings.
但是它必须要作为一种新英语，始终与它的母国保持密切联系但同时发生变化来适应非洲土壤。
The story ended badly, with the good doctor put to death as a traitor and Caroline Mathilde exiled to Hanover, the British monarchy's ancestral home.
这个故事结局很悲惨，一位好医生被冠以叛国罪而处死，卡罗琳•马蒂尔德被流放到英国君主制度祖先的家乡汉诺威。
The research pointed to warm-bloodedness being an ancestral trait that emerged early in dinosaur evolution.
该研究指出，温血作为一种祖先特征，出现在恐龙进化的早期。
The root of anything that can penetrate the human body triggers an ancestral fear, according to one neurologist.
一位神经学家说，任何能穿透人体的东西都能触发一种原始的恐惧。
But the syncytin genes we use today may have actually replaced an ancestral one that a virus bequeathed to the very first placental mammals.
但我们今天使用的合胞体蛋白基因可能实际上已取代了最初病毒传给第一个胎生哺乳动物的基因。
Maybe Archaeopteryx wasn't on the direct ancestral line to birds, but was part of an early experimentation in how to build a bird-like body.
可能‘始祖鸟’不在鸟类的直系血缘上，但它从某些程度上说是早期实验如何构建像鸟一样的身躯的一部分。
Maybe Archaeopteryx wasn't on the direct ancestral line to birds, but was part of an early experimentation in how to build a bird-like body.
可能‘始祖鸟’不在鸟类的直系血缘上，但它从某些程度上说是早期实验如何构建像鸟一样的身躯的一部分。
应用推荐