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。

To breed a turkey! That's really interesting!

饲养火鸡！太有趣了!

Physics meets biology in a project to breed better strains of rice.

物理学与生物学的碰撞--优质大米培植。

Six years to breed the right rice.

用六年的时间培育出合适的水稻。

Researchers are trying to breed resistant trees.

研究人员正在努力培育能抵抗霉菌的树木。

All here to breed before winter returns.

都趁着冬天来临之前来这里繁殖。

They come here to breed on the cliffs.

它们来这里的悬崖繁衍后代。

So this represents a doe that's ready to breed.

所以这个气味就代表着一只准备繁殖的雌鹿。

These Rufous Hummingbirds have migrated to the forest to breed.

这些棕蜂鸟已经迁徙到森林里来生活了。

This is what it takes to breed bees in a lab.

这就是在实验室培育蜜蜂的情景。

Another plan is to breed animals based on how much methane they produce.

另一项计划是根据动物产生的甲烷数量来繁殖动物。

They're the first to be artificially bred at a zoo in China.

这是中国动物园人工繁育的首例食蚁兽。

It's not enough to breed some frogs and release them into the rainforest.

仅仅养一些树蛙然后放到雨林中是不够的。

They said people were storing water inadequately in open containers allowing masquitoes to breed.

他们称人们在敞口容器种储藏水，导致蚊虫滋生。

The ones that produce less methane can then be used to breed more animals.

产生较少甲烷的那些动物可以得到准许繁殖更多。

Kittiwakes and puffins are birds of the open ocean, but they come ashore to breed.

三趾鸥和角嘴海雀一般在开放海域活动，不过它们要来到岸边繁殖。

But a second approach is to breed countermeasures into the sheep themselves.

但第二种方法是在绵羊体内培育对策。

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们将错过顺利繁衍后代的机会。

In order to breed, the quelea must stop, weaving thousands of nests in tight colonies.

为了繁衍，它们必须停下来，密密麻麻地编织无数的巢。

The Penguins migrate to the frozen sea ice every year to breed and raise their young.

企鹅每年都会迁移到结冰的海冰上繁殖和养育后代。