More recently, people have actually started to study something called cellular senescence.

最近人们实际上已经开始研究所谓的细胞衰老。

This is actually the term people used to use instead of aging, so we called it senescence.

这实际上是人们用来代替衰老的术语，所以我们称之为老年化。

Previous research had demonstrated too that DCA damages DNA in a way that promotes senescence.

先前的研究也发现，DCA会以一种诱发衰老的方式破坏DNA。

Annual herbs complete their lives – from seed to senescence, or death – in a single growing season.

年生草本植物在单个生长季节中完成其从种子到衰老或死亡的生命周期。

And when they get short enough, senescence sets in, and the cell can’t duplicate itself anymore.

当它们变得足够短时， 衰老就会开始， 细胞就无法再自我复制。

There are two main schools of thought in modern biological theories as to why senescence happens: Error versus Programming.

关于为什么会发生衰老，现代生物学理论中有两种主要的思想流派：错误与编程。

Senescence is the process of becoming old – which includes all the physical or mental deterioration that comes along with age.

衰老是变老的过程——包括随着年龄增长而出现的所有身体或精神退化。

" The first signs of a very dissolute and wabbly senescence—you have spent the afternoon talking about tan and a lady's legs" .

“非常放荡和摇摆不定的衰老的最初迹象——你整个下午都在谈论晒黑的皮肤和女士的腿” 。

If the damage gets too bad, the cell with that DNA will die or enter a process called senescence, which means it won't replicate.

如果损伤太严重， 带有该 DNA 的细胞就会死亡或进入一个称为衰老的过程，这意味着它不会复制。