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Sperm and eggs must lose one copy each as they prepare for fertilisation .

当他们准备受精时，精子和卵子必须各放出一个副本。

Mississippifailed to pass a measure that would have banned abortion from the moment of fertilisation .

密西西比州一项从受精的时候开始禁止堕胎的措施没有被通过。

This study , like many , made no provision for co2 fertilisation .

这项研究和其他许多一样，没有规定二氧化碳施肥。

An independent regulator , the human fertilisation and embryology authority , launched a public consultation in september .

一个独立的监管机构，人类受精和胚胎学管理局在九月对公众展开了咨询。

Using in vitro fertilisation to select the sex of a child is illegal in canada , and the ad was soon withdrawn .

由于在加拿大使用体外受精来选择婴儿性别是非法的，这则广告很快就被撤消了。