纪录片《火星任务》 第40期 液态水

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 metallic¹ 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 teeming² with microscopic³ 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 filaments⁴ 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

1 metallic   

adj.金属的；金属制的；含金属的；产金属的；像金属的

参考例句：

• A sharp metallic note coming from the outside frightened me.外面传来尖锐铿锵的声音吓了我一跳。
• He picked up a metallic ring last night.昨夜他捡了一个金属戒指。

2 teeming   

adj.丰富的v.充满( teem的现在分词 )；到处都是；（指水、雨等）暴降；倾注

参考例句：

• The rain was teeming down. 大雨倾盆而下。
• the teeming streets of the city 熙熙攘攘的城市街道

3 microscopic   

adj.微小的，细微的，极小的，显微的

参考例句：

• It's impossible to read his microscopic handwriting.不可能看清他那极小的书写字迹。
• A plant's lungs are the microscopic pores in its leaves.植物的肺就是其叶片上微细的气孔。

4 filaments   

n.（电灯泡的）灯丝( filament的名词复数 )；丝极；细丝；丝状物

参考例句：

• Instead, sarcomere shortening occurs when the thin filaments'slide\" by the thick filaments. 此外，肌节的缩短发生于细肌丝沿粗肌丝“滑行”之际。 来自辞典例句
• Wetting-force data on filaments of any diameter and shape can easily obtained. 各种直径和形状的长丝的润湿力数据是易于测量的。 来自辞典例句