We all have XX chromosomes, right?

我们都有XX染色体，对吧？

But until 6 or 7 weeks after fertilization, both 'XY' and 'XX' embryos have identical gonads.

但直到受精后6或7周，XY和XX胚胎都有相同的生殖腺。

And The XX factor: How Working Women are Creating a New Society. By Alison Wolf.

和《XX因素：职场女性如何创造新社会》，作者：艾莉森·伍尔芙。

You can be XX and male.

你可以是 XX 和男性。

Here in central XX several hundred people are marching through the city centre.

在 XX 中心，数百人正在市中心游行。

An unmanned Russian rocket has blasted off from the Baikonur xx in Kazakhstan on a supply run to the International Space Station.

一艘俄罗斯无人火箭在哈萨克斯坦拜科努尔发射，这是在为国际太空站运送补给物资。

And biologically speaking, the root cause of sex is a pair of chromosomes: XX for females and XY for males.

从生物学上讲，性别的根本原因是一对染色体：女性为 XX，男性为 XY。

The next most common scenario is mosaicism, meaning the individuals have some cells in their body with the 45, X karyotype and others with a 46, XX karyotype.

另一种最常见的情况是嵌合体，这意味着个体体内的一些细胞具有45，X核型，而另一些细胞具有46，XX核型。

And even people with 'XX' Chromosomes that develop male genitals and characteristics, due to a piece of the 'Y' chromosome breaking off, and switching places to an 'X' chromosome.

甚至那些带有“XX”染色体的人也会发展出男性生殖器和特征，这是由于“Y”染色体的一部分断裂，并转移到“X”染色体上。

Like, it can mean having different combinations of sex chromosomes – as in Klinefelter Syndrome, which creates chromosomes XX and Y, or in Triple-X Syndrome, which results in XXX.

就像，这可能意味着具有不同的性染色体组合——如克兰费尔特综合症，它会产生 XX 和 Y 染色体， 或者在三 X 综合症中， 会产生 XXX。