The breeder had the dog's sex organs removed so he could not be used to produce young dogs.

饲养员给狗做了绝育手术，这样它就不能繁殖幼犬。

Around 7 weeks the male sex organs start to develop because of a gene on 'Y' chromosome called 'SRY'.

大约7周左右，男性性器官开始发育，这是由于“Y”染色体上有一种叫做“SRY”的基因。

Her mother wanted her to be educated. The girl says she is thankful, especially for health reasons that she did not have her sex organs cut.

她的妈妈希望她能受到教育。女孩说她很是感激，尤其是出于健康原因，因为她的性器官没有被切割。

Early on in male development, testosterone helps the external sex organs to differentiate into male genitals and causes the testes to descend from the abdomen into the scrotal sac.

在男性发育的早期，睾酮帮助外部性器官分化成男性生殖器，还可促进睾丸从腹腔降入阴囊。

But this much is clear regardless of gender identity: the brain is the biggest sex organ, and everyone can benefit from expanding their sexual imagination.

但无论性别认同如何， 这一点都很清楚：大脑是最大的性器官，每个人都可以从扩大性想象力中受益。

But when a male tries to carry her off to mate, he catapults instead into the flower’s sex organs, sometimes picking up a sticky packet of pollen.

但是，当雄性试图将她带走交配时， 他反而会弹射到花朵的性器官中，有时会捡起一包粘稠的花粉。

Having an extra X chromosome makes the testicular cells generate less testosterone, which is a hormone responsible for primary sex characteristics like development of the sex organs as well as secondary sex characteristics like height and body shape.

多一条X染色体会让睾丸间质细胞的睾酮产量下降；睾酮这种激素不仅负责第一性征的发育，如性器官发育，也负责第二性征发育，如身高和体形。

The internal sex organs are the ovaries, which are the female gonads, the fallopian tubes, two muscular tubes that connect the ovaries to the uterus, and the uterus, which is the strong muscular sack that a fetus can develop in.

内生殖器包括卵巢，即女性性腺；输卵管，连接卵巢和子宫的肌性管道；还有子宫，是孕育胎儿的坚固的肌性器官。