He says they are part of the genome of the last common ancestor of all birds,frogs, dinosaurs and mammals.

VOA: special.2010.06.29

There were a few things I didn't get to finish last time in talking about particularly gene transfer in mammals.

我们还有一些上次未完成的内容要讲,尤其是哺乳动物的基因导入

耶鲁公开课 - 生物医学工程探索课程节选

From a psychological point then, animals have evolved to be nice to their kin, particularly their children, and particularly in birds and mammals.

从心理学角度看，动物进化趋向于对自己的亲人有益，特别是自己的孩子，以鸟类和哺乳类为代表。

耶鲁公开课 - 心理学导论课程节选

Yet their genetics have caused pandas to develop more slowly than human beings and other mammals.

VOA: special.2010.01.19

You could do the same thing in mammals and here's one quick example of that, using a different kind of a vector, but inserting a gene into the fertilized egg of a mammal, in this case, a sheep.

你也能在哺乳动物上做到同样的效果,这里有另一个简短的例子,用了另一种载体,把一段基因注入哺乳动物的受精卵中,在这里我们用了绵羊

耶鲁公开课 - 生物医学工程探索课程节选

The Everglades is also home to forty species of mammals and fifty reptile species.

VOA: special.2009.06.30

Birds and mammals invest in quality and not quantity, as opposed to fish and reptiles.

鸟类和哺乳类靠质生存,而非以量取胜，这与鱼类和两栖类不同。

耶鲁公开课 - 心理学导论课程节选

The Galapagos Islands are home to many unusual birds, reptiles and small mammals.

VOA: special.2009.12.16

For birds and mammals, we don't have many kids but so we devote a huge amount of psychological energy to protecting the ones that we have.

鸟类和哺乳类，没有很多孩子,所以我们用大量的心力,去保护我们有的孩子。

耶鲁公开课 - 心理学导论课程节选

But echidnas are mammals, so they feed their young, called puggles,with milk.

VOA: special.2009.07.07

And in fact, this is how it works for all mammals.

事实上，这与哺乳动物相同。

耶鲁公开课 - 心理学导论课程节选

Cows are like all mammals: they produce milk for their young.

VOA: special.2009.07.21

Echidnas are part of a group of egg-laying mammals called monotremes.

VOA: special.2009.07.07

And there are more than forty kinds of mammals.

VOA: special.2010.01.04

The rafts also can hold small mammals and reptiles.

VOA: special.2009.12.16

So do mammals and reptiles.

VOA: special.2011.08.03

The marsh is home to a vast array of plants,fish, reptiles like the North American Alligator, and mammals.

VOA: standard.2010.05.09

During their six-week voyage, researchers will employ a range of techniques to unlock some of the secrets of the giant marine mammals.

VOA: standard.2010.01.05

And then you have issues such as birds and mammals coated with oil."

VOA: standard.2010.05.09

"It could be taken up by crustaceans like shrimp crabs, things like that which are the base of the food chain and that could be passed up to fish and then mammals and the toxins could be concentrated and that could be harmful to animals that feed on these smaller organisms."

VOA: standard.2010.05.09