In fact, it has a big role in making sperm.

X染色体在精子的形成过程中起重。

More recent studies have startedfiguring out what kind of chemical attracts a sperm.

很多近代的研究已经开始弄清楚吸引精子的是那种化学物质。

After a man dies, his sperm remains alive for some time.

当一个男人死了以后，他的精子仍可存活一段时间。

Sperm contain approximately 50 to 75 mitochondria in the tail, to help them swim.

精子的尾部大约含有 50 至 75 个线粒体，来帮助他们游动。

Now, male insects do compete with weapons, like the horns on these beetles.

把雌虫之前与之交配的 雄虫的精子刮掉。

Okay, they would not be able to do that very often.

因为这意味着其精子有更多的时间 灌进雌虫体内，授精给她的卵子。

Unlike males who are constantly producing new sperm, females have a finite number of eggs.

与不断产生新精子的男性不同，女性的卵子数量有限。

British scientists said they produced healthy baby mice by fusing sperm with reprogrammed cell material.

英国科学家曾称，他们通过将精子与改组的细胞物质结合，培育出了健康的幼鼠。

He said that Tam was likely too old to produce good sperm.

他说，塔姆可太大了，无法提供优良的精子。

The protein permits the first molecular connection between sperm and egg.

该蛋白质允许精子和卵子之间的第一次分子连接。

Are you still mad about the sperm bank? No.

你还在为精子银行的事生气吗？没有？没有。

Then when the boy grows up, he will have, we've shown, a lower sperm count.

我们已经证明，当男孩长大后，他的精子数量会更少。

They had only half as many moving sperm as men in Minneapolis.

他们的移动精子数量只有明尼阿波利斯男性的一半。

They're the stem cells that set the sperm-making process in motion, by dividing.

它们是通过分裂来启动精子生成过程的干细胞。

Then there are children born as a result of sperm or egg donation.

有些家庭的孩子是精子或卵子捐献的结果。

The most effective spermattractor is called bourgeonal.

最有效的精子吸引子叫bourgeonal。

In addition, the Sertoli cells of the testes respond to follicle-stimulating hormone by producing more sperm.

此外，睾丸的支持细胞开始对FSH产生应答，产生更多的精子。

Their speed goes from eighteen point three micrometers per second up to a whopping thirty point one.

精子的速度从每秒18.3微米上升到30.1微米。

No, no I'm not blaming you I'm just saying, you end up with more sperm shape if it's...

不，不，我不是在责怪你，我只是说一下，如果你… … 你最后得到的是更像精子形状大小的。

Tobacco subsidies, sure. Research grants to study the motility of unpreserved bull sperm, of course. Creative-writing subsidies, never.

烟草补助，没问题。研究未经处理的牛精子活力需项目资金，当然可以。家创补助？休想。