Fertilising these eggs for experimentation is forbidden in America.

美国禁止为实验用的卵细受精。

It works on the goats, who leave the tea untouched and instead eat up the weeds, fertilising the tea plants with their droppings.

这对山羊很有效，它们不碰茶叶，取仅吃周围的杂草，其排泄物为茶树施肥。

Since then it has been shown that these ovarian stem cells can develop into eggs, be fertilised and produce perfectly healthy mouse pups.

迄今已经证实，此类卵巢干细能够分化成为卵细，卵细在受精后还能发育成健康的鼠宝宝。

(Female spiders can do this because they store sperm for a period of days or weeks before they use it to fertilise their eggs.)

（雌所以能这样做是因为她们能将精液存留数日或几周的时间，然后决定是否用其对卵子受精）。

Tomatoes are able to fertilise themselves, without need of a pollinator, yet even this self-pollination can be assisted by a bee visiting a flower.

番茄可以自我繁衍，不需要传粉者，但是如果有蜜蜂来传播花粉，这种自花授粉的植物也会得到帮助。

Only after pollination can the next process occur – fertilisation - when the pollen carried from another plant fertilises a female ovule to make new seeds.

只有在授粉后，下一个过程才会发生——受精——从另一株植物上带过来的花粉使一个雌胚珠受精，从产生新的种子。