他的祖先从爱尔兰来到美国。
他有希腊血统——他的祖先原来姓卡拉扬尼斯。
There was Greek blood in his veins: his ancestors originally bore the name Karajannis.
她的中国朋友们称那位皇后是令他们尊敬的祖先。
Her Chinese friends referred to the empress as their venerable ancestor.
依照逻辑推论，我们的祖先在弄清1年是什么意思之前，不可能举行过每年一度的节庆。
Logic dictates that our ancestors could not have held a yearly festival until they figured what a year was.
我们的祖先只凭双手改造自然。
Our ancestors merely made use of their hands to change nature.
它不包含现代动物群体的祖先。
他们是当今因纽特人的祖先。
我的祖先是一位游历于乡间的传教士。
My ancestor was a preacher, traveling around the countryside.
许多物种的早期胚胎具有其祖先的特性。
后来的祖先仍然进化回水中，变成了海龟。
Later ancestors still evolved back into the water and became sea turtles.
我的祖先是西班牙人。
对分子水平只有一种解释，那就是共同的祖先。
There is only one explanation for that at the molecular level, which is a common ancestor.
我们旧石器时代的祖先每天消耗约100克纤维。
Our palaeolithic ancestors consumed around 100g of fibre per day.
我一边沿着河边朝浅滩走去，一边想我的祖先们。
As I walked along the river towards the ford, I thought about my forefathers.
这种祖先物种可能是在岛屿相连的时候进化而来的。
This ancestral species might have evolved at a time when the islands were connected.
在今天的众多藻类中，绿藻可能与植物的祖先最为相似。
Of today's different groups of algae, green algae are probably the most similar to ancestral plants.
自古以来，我们的祖先就劳动、生息、繁衍在这块土地上。
From ancient times our forefathers have laboured, lived and multiplied on this land.
在人类进化史的绝大多数时间里，我们的祖先都生活在部落里。
For most of our evolutionary history, our ancestors lived in tribes.
我们的祖先没有想到人口的增长速度会超过原材料的供应速度。
Our forefathers had no idea that human population would increase faster than the supplies of raw materials.
我们祖先所做的是在我们的皮肤细胞中产生更持久的天然色素。
What we did in our ancestry was to produce more permanent natural coloring in our skin cells.
这种夜间的“交易”也许可以一直追溯到所有哺乳动物的祖先身上。
It is probable that the nocturnal trades a way back in the ancestry of all mammals.
这样的介绍更能告诉我们当代人们对世界的看法，而不是祖先的看法。
Such presentations tell us more about contemporary perceptions of the world than about our ancestors.
有证据表明所有现代海龟都有陆生的祖先，他们比大部分恐龙还古老。
There is evidence that all modem turtles are descended from a terrestrial ancestor which lived before most of the dinosaurs.
我们现今可以说，这间大学的直系祖先是柏拉图学院的柏拉图式共和国。
We can say today that this university is a direct ancestor of the platonic republic of Plato's Academy.
这就是整个观点——我们已经给了你们古希腊人对祖先甚是尊敬的感觉。
There's the whole idea—we've already given you some sense that the Greeks were ancestor worshippers.
它们与毛毡苔有着更近代的祖先，毛毡苔也可以将树叶卷起来盖住猎物。
They share a more recent ancestor with Drosera sundews, which can also curl their leaves over their prey.
如果我们回过头看看我们的祖先，我们会发现他们身上的毛发比我们现在多得多。
If we look back at our ancestors, we'll see that they had a lot more hair on their bodies than we do now.
当然，这使他们有别于他们的祖先，但是什么让他们有勇气进行如此冒险的航行呢？
Certainly it distinguished them from their ancestors, but what gave them the courage to launch out on such risky voyages?
然而，共同的祖先对于新物种又太现代，而不能作为来自非洲的人类首次远足的遗迹。
The common ancestor is, however, too recent for the new species to be a remnant of the first human excursion from Africa.
他也是尼加拉瓜七位总统的祖先。
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