The fertilized egg develops into a fetus.

受精卵发育成一个胎儿。

But no one imagined they'd been fertilized.

但没人想到它们已经受精了。

Then, the soil can be fertilized using recycled biological waste.

然后，可以使用回收的生物废物对土壤进行施肥。

And so where the soils are consequently far less frequently fertilized naturally.

因此，那里的土壤自然施肥的频率要低得多。

Where we would eat crops fertilized with our own waste.

我们的排泄物可以作为肥料培育可食用的农作物。

Those who came before did, after all, fertilize the soil out of which they grew.

毕竟，前人给自己生长的土壤施了肥。

It slowly fertilized the soil and grew more grass.

它慢慢地肥沃了土壤，长出了更多的草。

These fish breed in groups where one male fertilizes several females.

这些鱼成群繁殖，一只雄鱼使几只雌鱼受精。

In these temperatures, the fertilized eggs have no chance of developing.

在这样的气温下受精卵无法发育。

And U.S. farmers, well, they could face fertilizer shortages.

而美国农民，他们可能面临肥料短缺的问题。