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

但水螅有弥漫脑细胞构成神经网络，而不像我们有一个密集器官。

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

就是人想要解开革命九头蛇！--LE JOHANNISBURG，册子。

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

它有点像九头蛇头。

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 ，是自然界中最基本神经系统。

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

所以些再生九头蛇更加变形，而且通常有多个身体轴——比如两张嘴和两只脚。

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太阳能模块，只是稍厚了一点。

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

该团队跟踪了 2000 多只单独九头蛇，总共跟踪了 390 万天。

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

但是， 种变老和死亡事情也有一些例外——事实证明，包括被称为九头蛇洋生物。

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

看，水螅身体真很简单：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.

就是我能够做到，而大多数九头蛇做不到。

So how do hydras not decline with age?

那么九头蛇如何不随着年龄增长而衰退呢？

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排列构成了一种结构，该结构在整个新水螅体内得到遗传。

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

在水螅生命周期任何时候都没有观察到生育率下降或死亡率增加。

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

尽管水螅再生有点极端，但它类似于我们人类治愈伤口和发育成胚胎方式。

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——一种柔软管状淡水动物，而不是神话中蛇或漫威反派——真非常擅长。

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一项研究，条规则还有另一个例外：九头蛇。

On the other hand, slices of hydra shaped like closed rings didn’t fold so well, and formed spheroids with different regions of actomyosin aligned in different ways.

另一方面，形状像闭合环水螅切片折叠得不太好， 形成了不同区域肌动球蛋白以不同方式排列球体。

As far back as 1968, researchers found that hydra use neurotransmitters like glutamate to activate neurons and orchestrate eating, which sounds like something an organism with a brain would do.

早在1968年，研究人员就发现水螅会利用谷氨酸等神经递质来激活神经元并协调进食，听起来就像有大脑有机体会做事情。

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

水螅体内每个细胞每三到四个星期就会被全新干细胞产生新鲜细胞更换一次。