萨瓦奇先前已经将五个冰冻的胚胎留在了诊所里，这么做是出于她可能还会再要一个孩子的考虑，她已经有了三个孩子了，其中一个就是通过试管婴儿技术降生的。

Savage had previously left five frozen embryos at the clinic thinking that one day she would want another child to add to the three she already has, one through in-vitro fertilisation.

youdao

但是，经由试管受精研究，科学家们知道，较高的葡萄糖水平会刺激男性胚胎的生产，而且会对女性胚胎的形成产生抑制作用。

But scientists know from in vitro fertilisation research that higher levels of glucose encourage the growth and development of male embryos while inhibiting female embryos.

youdao

这个机制在哺乳动物中还未被理解，但是从试管受精研究可以知道，高血糖水平可以促进生长和男性胚胎的发育，却抑制女性胚胎的发育。

The mechanism is not yet understood in mammals, but it is known from IVF research that high levels of glucose encourage the growth and development of male embryos while inhibiting female embryos.

youdao