纪录片《火星任务》 第40期 液态水（在线收听）

So I'm going to take a sample...

我要取一点样品

here...

这里

dunk in the pH probe

插入检测探针

and we see that it's dropped below 3 already,

可以看到数值已经小于三

2.7

2.7

and it's levelling off at about 2.65, so that's acidic.

稳定在2.65左右 呈酸性

That's about 100,000 times more acidic than a normal river.

比普通河水的酸性强十万倍

And that's almost as acidic as stomach acid.

几乎和胃酸一样强

That is one acidic river.

这可真是一条酸河

If liquid water ever existed on Mars,

如果火星上真的有液态水

it might well have been a metallic acid river like this.

或许也会像这条河酸性一样强

It seems unlikely to think that life

在如此恶劣的环境中

could have emerged in such a hostile environment,

很难想象会有生命存在

but scientists have discovered this blood-red river

但是科学家发现在血红色的河水中

is actually teeming with microscopic bacteria.

充满了细菌

This is a microscope photograph of the river water

这是显微镜下的河水

and you can see these thin,

你可以在显微镜下

hair-like threadsdown the microscope,

看到这些头发般的细线

and these are the microbial filaments themselves,

它们是菌丝

these are the cells, these are the life in this water.

它们就是细胞 是水中的生命