Is just a chemical reaction that compels animals to breed.

不过是让动物繁衍后代化学反应罢了。

When an animal leaves more offspring, its genes will spread.

当动物繁殖出更多后代时， 就意味着它们基因得到传播。

I'm descended from the third brother!

我是那第三个兄弟后代！

If a genetically modified person produces offspring.

如果一个转基因人生产后代。

Trilobites have no direct descendants, but their evolutionary cousins are alive and well.

三叶虫没有直系后代，但它们在演化上表亲现在仍然活得很好。

But in hurricane-free areas, docile colonies had more babies.

但在没有遭遇飓风袭击地区，温和蜘蛛群繁衍后代数量更多。

My Ministers remain committed to protecting and improving the environment for future generations.

大臣们仍然会致力于为子孙后代保护和改善环境。

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

这是我们欠我们、我们彼此和我们后代。

Together we can achieve a sustainable future for generations to come.

我们一起为子孙后代实现可持续未来。

They could easily be Slytherin's descendants.

他们很可能是斯莱特林后代。

It is the child of a donkey and a horse.

它是驴和马后代。

And many primates are frequently seen doing this as well.

许多灵长类动物也常被发现以此喂养后代。

They wanted to pass on to their descendants this kind of education.

他们想把这种教育传给子孙后代。

With the help of this technology to continue the fight for future generations.

他们会在无人机帮助下，继续为子孙后代战斗。

People have been doing this forever, and it's this shared experience that everyone has.

繁衍后代是人类诞生以来就在做事情，这种共享经验是每个人都有。

Think about how you would like the world to be for your daughters and granddaughters.

想一想，你想给子孙后代留下一个什么样世界。

Highly symmetrical bodies in animals might signal quality genes, and better offspring.

动物界存在高度对称体型可能代表着高质量基因、以及更好后代。

Which would make them and their offspring an easy meal.

这会使树蛙及其后代轻易成为天敌盘中餐。

If that bacterium survives a dose of treatment, its descendants will inherit that same resistance.

如果这种细菌在一定剂量治疗中存活下来，它后代将继承同样抵抗力。

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

她相信她种植森林将是给后代礼物。