Is just a chemical reaction that compels animals to breed.

不过是让动物繁衍后代的化学反应罢了。

It's a brutal way to raise a family.

种养育后代的方式非常残酷。

It's a model full of danger for future generations.

是一个危害子孙后代的模式。

Or is there something about the bromance that holds the key to reproductive success?

还是兄弟情谊是成功繁衍后代的关键？

Animals which bring up or nourish their young on milk are called mammals.

依靠奶来抚养后代的动物就叫做哺乳动物。

That is what we owe our forebearers, one another, and generations to follow.

是我欠我的祖先、我彼此和我后代的。

She believes the forest she is planting will be a gift to future generations.

她相信她种植的森林将是给后代的礼物。

And he suspects it might have something to do with the parenting.

他怀疑可能与郊狼养育后代的方式有关。

They showed how genetic qualities are passed to living things from their ancestors.

他了基因品质是如何从祖先遗传给后代的。

We borrow it from our children.

而是从我的后代借来的。

But the ancestors of baleen whales had a very different diet.

但是须鲸祖先的饮食习惯与些后代的差别非常大。

In turn, their nursemaid will benefit the demanding offspring.

反过来，它的保姆作用有助于后代的健康。

If she doesn't appear soon, it could be too late for them to breed successfully.

如果雌性信天翁还不出现他将错过顺利繁衍后代的机会。

What worries Ippolito more than the business impact is the threat to future generations.

比商业影响更让Ippolito担心的是对子孙后代的威胁。

Scientists have developed the technique to prevent some genetic diseases from being passed on.

科学家发明种能预防一些遗传疾病传给后代的技术。

" These nutrients can then be used by future generations of life, " Marek said.

" 然后些营养物质就可以被后代的生命所利用。"

A British company has found a way to genetically modify mosquitoes to kill their offspring.

一家英国公司已经发现了一种通过改变蚊子基因杀死它后代的方法。

Some 80 percent of birds practice biparental care, meaning both the male and female rear their offspring together.

80%的鸟类都是奉行雌雄二鸟共同抚育后代的双亲抚育。

These tiny bacteria and their billions of descendants changed the destiny of our planet.

些微小的细菌及其数以亿计的后代改变了地球的命运。

A gene drive is a term for genetic engineering that alters the probability of genes passed to offspring.

基因驱动是基因工程的一个术语，它改变基因传递给后代的可能性。