Time also gradually shortens the telomeres that act as protective caps for our DNA-containing chromosomes.

时间也会逐渐缩短端粒的长度，端粒是我们DNA染色体的保护帽。

In contrast, his brother's telomeres remained relatively stable.

相比之下，他兄弟的端粒保持相对稳定。

The most hostile men were 30% more likely to have short telomeres.

最具敌意的男性端粒短的可能性要高出 30%。

That's why Bailey figured that Scott's telomeres would shorten during his year in space.

这也是为什么贝利认为斯科特的端粒在太空中的一年里会缩短。

When telomeres become too short, a cell can no longer divide and it dies.

当染色体终端太短时，细胞也就无法再分裂了，这意味着一个细胞的死亡。

So, telomeres are directly related to aging and length of life.

所以端粒与年龄增长和寿命长短有直接关系。

In humans and other species, telomere length has been shown to shorten with age.

在人类和其他物种中，端粒长度已被证明随着年龄的增长而缩短。

Telomeres are protective caps on the end of our chromosomes which shorten over time.

端粒是染色体末端的保护帽，随着时间的推移会缩短。

These caps, called telomeres, are one line of defense against aging in many species.

这些连接键叫做端粒体，就是它们帮助这些生物抵抗衰老。

But Bailey says longer telomeres are more likely yet another signal of stress or even injury.

但是贝利说，变长的端粒更可能是外力压迫或损伤的另一种信号。