Early embryos of many species develop ancestral features.

许多物种的早期胚胎具有其祖先的特性。

This ancestral species might have evolved at a time when the islands were connected.

这种祖先物种可能是在岛屿相连的时候进化而来的。

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。

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。

There's a lot of frying going on at this particular place and this is something that's not typical of ancestral human diets.

在这个地方，有很多油炸食品，但这不是我们祖先的日常饮食。

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。

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。

Founder mutations are a class of disease-causing genetic mutations, each derived from its own ancestral "founder" in whom the mutation originated.

创始者突变是一类引起疾病的基因突变，每一种都源自其自身祖先的“创始者”。

We speak a decimal language because an ancestral tongue, proto-Indo-European, was decimally based.

我们说的是十进制的语言，这是因为我们的始祖语言——原始印欧语——是基于十进制的。

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。

Nunavut believe their best hope of survival in this changing environment lies in combining their ancestral knowledge with the best modern science.

努纳武特人认为生存于不断变化的环境的最大希望在于结合先人的智慧与先进的现代科学。

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。

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。

These paralogous genes have arisen by repeated duplication of an ancestral gene.

这些平行进化同源基因是通过重复复制祖先基因而产生的。

I'm a Leo.My ancestral home is in Sichuan.

“我1977年出生，狮子座，老家在四川”。

But our ancestral mothers had other problems.

但我们的先母们面临着其他的问题。

The above accords well with ancestral conditions.

上述的情况在原始的条件下也是适合的。

Distribute it according to your ancestral tribes.

你们要按宗族的支派承受。

Exactly how naughty were we in our ancestral environment?

我们的祖先在他们的生活圈中究竟有多么的不安分？

These are things that are scary in our ancestral environment.

有东西让我们的祖先提心吊胆。

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。

The Qingming Festival in spring is the occasion for visiting ancestral graves.

清明节是扫墓拜祭先人的日子。

Each group carried only a subset of the genetic variation from its ancestral population.

每个族群只携带有他们祖先群体中遗传变异的一部分。

Why should we leave our ancestral home? We should return; nothing will happen to us!

我们应该回去，不会有事的！

It's time for him to cancel the tour and reconnect with his ancestral home in Greece.

现在，应该是他取消那些售书活动，并与他祖先居住的希腊重新取得联系的时候了。

My ancestral village, Dhanikhola, is several hours north of here, in a district called Mymensingh.

我的老家丹尼科拉村在北边一个叫美门沁的地方，离这里有几个小时路程。

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。