But hydra have neural nets of diffuse brain cells, rather than a dense organ-like we have.

但水螅有弥漫的脑细胞构成的神经网络，而不像我们有一个密集的器官。

Such are the persons who want to unchain the hydra of revolutions! --LE JOHANNISBURG, Pamphlet.

就是这样的人想要解开革命的九头蛇！--LE JOHANNISBURG，小册子。

It was, like, kind of like the hydra's head.

它有点像九头蛇的头。

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

今年，一群日本科家 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。

Can humans learn the secrets of longevity from the hydra, a tiny aquatic creature capable of indefinite self-renewal?

人从水螅这种具有无限自我新力的微小水生生物身长寿的秘诀呢？

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。

See, hydra bodies are really simple: one head and one foot lined up along a single body axis.

看，水螅的身体真的很简单：一个头和一只脚沿着一个身体轴排成一行。

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

这就是我够做的，而大多数九头蛇做不的。

When you see a Source hydra panel, it looks a little bit like a normal solar module, except for just a little thicker.

Source 水力板看起来有点像普通的太阳模块，只是稍微厚了一点。

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。

The alignment of actomyosin fibers in the spheroid lays out a structure that gets inherited throughout the new hydra’s body.

球状体中肌动球蛋白纤维的排列构成了一种结构，该结构在整个新水螅体内得遗传。

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？

No decline in fertility, or increase in mortality, was observed at any point in the hydra life cycle.

在水螅生命周期的任何时候都没有观察生育率下降或死亡率增加。

Like the mythical hydra, maybe this is a beast that never can be truly  slain with just chopping off its heads.

就像神话中的九头蛇一样，也许这是一种永远无法通过砍下头来真正杀死的野兽。

So these regenerated hydra were more deformed, and usually had multiple body axes – like two mouths and two feet.

所以这些再生的九头蛇加变形，而且通常有多个身体轴——比如两张嘴和两只脚。

And hydra – the squishy tube-shaped freshwater animal, not the mythological sea serpent or Marvel villain – are really, really good at it.

九头蛇——一种柔软的管状淡水动物，而不是神话中的海蛇或漫威反派——真的非常擅长。

And even though hydra regeneration is a little more extreme, it’s similar to how we humans heal wounds and develop as embryos.

尽管水螅的再生有点极端，但它似于我们人治愈伤口和发育成胚胎的方式。

According to a study that came out this week from the Max Planck Institute in Germany, there’s another exception to this rule: the hydra.

根据德国马克斯普朗克研究所本周发表的一项研究，这条规则还有另一个例外：九头蛇。

Every cell in a hydra’s body is replaced every three to four weeks, by fresh cells produced by brand new stem cells.

水螅体内的每个细胞每三四个星期就会被全新干细胞产生的新鲜细胞换一次。