The team followed more than two thousand individual hydras for a combination of 3.9 million days.

该团队跟踪了 2000 多只单独的九头蛇，总共跟踪了 390 万天。

This year, a group of Japanese scientists demonstrated that hydras sleep.

今年，一群日本科学家 证明了水螅睡觉。

Instead of a brain, hydras have nerve nets, the most basic nervous systems in nature.

水螅没有大脑，而是拥有神经网络 ，这是自然界中最基本的神经系统。

And THAT is what I have been able to do that most hydras can’t.

这就是我能够做到的，而大多数九头蛇做不到的。

So how do hydras not decline with age?

那么九头蛇如何不随着年龄的增长而衰退呢？

But there are a few exceptions to this get-older-and-die thing -- including, it turns out, tiny sea creatures called hydras.

但是， 这种变老和死亡的事情也有一些例外——事实证明，包括被称为九头蛇的微小海洋生物。

Because, like, maybe they can magically repair the neurodegeneration that leads to Alzheimer’s, that would pretty much be exactly what we would expect from hydras at this point.

因为， 就像，也许他们可以神奇地修复导致阿尔茨海默氏症的神经退化， 这几乎正是我们目前对九头蛇的期望。

If the mortality rates observed in this study continued, that means that in 3000 years, 5% of those hydras would still be alive, if they were kept safe in the lab.

如果这项研究中观察到的死亡率继续保持下去，那就意味着在 3000 年内， 如果将这些九头蛇安全地保存在实验室中， 其中 5% 仍会存活。