This disappearance made possible the rise of mammals on the earth.

恐龙的灭绝使地球上哺乳动的产生有了可能。

This characteristic is uniquely human as other mammals breasts only enlarge during nursing.

这种特征是人类独有的，因为其他哺乳动的乳房只在哺乳期发育。

Scientists have unearthed the fossil of a mammal which lived 125 million years ago.

学家出土了生活在1.25亿年前一只哺乳动的化石。

Bats are the only mammals that can fly.

蝙蝠是唯一会飞的哺乳动。

What is the largest mammal in the weasel family?

鼬类中最大的哺乳动是？

Pickled mammals are studied to find out which species can transmit diseases.

研究浸泡的哺乳动，旨在发现传播疾病的种。

But nobody has ever released genetically modified mammals into the wild.

但是从未有人向自然界中投放过基因改造后的哺乳动。

But they found the mammal world especially interesting.

但随后发现哺乳动的世界非常有趣。

This allows them to see the radiated heat of warm-blooded mammals.

这使它们能够看到温血哺乳动的辐射热。

Physical anthropology is concerned with the development of man as a mammal.

生人类学关注的是人类作为哺乳动的发展。

For mammals like echidnas and kangaroos, the water proved too great a hurdle.

对于针鼹和袋鼠这样的哺乳动来说，海水是一个非常大的障碍。

So after actually correcting for body size bats are the longest-lived mammals on Earth.

所以在校正了体型之后，蝙蝠是地球上最长寿的哺乳动。

Their explanation for this involves the uniquely mammalian activity of nursing.

他们解释说这个是因为哺乳动独有的哺乳活动。

Three-toed sloths have the slowest metabolism of any mammal.

三趾树懒的新陈代谢率是所有哺乳动中最慢的。

It is one of the few tailless mammals besides the apes and man.

它是除了猿猴和人类以外，少数没有尾巴的哺乳动之一。

Farmed cattle alone weigh nearly ten times as much as all wild mammals combined.

仅养殖牛的重量和就相当于所有野生哺乳动总和的十倍。

Humans are among the only mammals on the planet with this ability.

人类是这个星球上唯一有这种能力的哺乳动。

Dr. Commins continues to work towards an immediate cure to mammalian meat allergy.

康明斯医生还在寻找一个即时治愈哺乳动肉类过敏的办法。

Our mammal ancestors were running underfoot, trying to avoid being hors d'oeuvres for T-rex.

我们哺乳动的祖先靠着双脚奔跑，试图避免成为霸王龙的盘中餐。

Many people come to Denali to see the park's largest mammals.

许多人来到德纳里看公园里最大的哺乳动。