纪录片《冰冻星球》 第79期 履于薄冰（11）

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Alun's team have found the hole down which the lake disappeared

艾伦的团队已经找到了让湖水消失的洞穴

and they want to have a closer look.

他们想要来个近距离观察

It's not a job for anyone with a fear of heights.

这对恐高的人来说是绝不可能的

As you can see, it's dry up here,

可以看到这里已经干涸

but if you listen,

但如果仔细听

you can hear the thunder of,

便能听到大量的流水

there's a lot of water entering it at some depth.

从深处贯入其中的隆隆声

Alun wants to place a sensor¹ deep into the moulin

艾伦想在冰川锅穴深处安装一个传感器

to discover how much water is flowing through the ice.

来研究有多少水在冰川里穿梭

As they drop, they travel back in time.

向下深入的时候 他们仿佛回到了从前

30 metres down and they reach ice formed from snow that fell

三十米深处的冰是一万年前

10,000 years ago, in the last Ice Age.

冰河世纪时期的降雪堆积起来的

When this lake drained and the plug got pulled

一旦湖水干涸 就像打开了阀门

and the whole lot flushed² down through here,

整个水流都会从这冲刷而下

this ice sheet, it rose by a metre

这块冰原就会增高一米

as that water accessed the bed and forced,

因为水流到了冰床之下

jacked up the ice sheet.

迫使冰原提升

So, we know that the water

我们知道

in this whole plumbing³ cavity⁴ system, down here,

水在这整个垂直坠落过程中

we know that shoots straight through that ice

径直冲破了冰川

and actually hits the bed of the ice sheet.

直接撞击了冰原的底部

We've hit the water, I can see the water now.

我们到水边了 我能看到水了

Great. Nice work.

很棒 干得漂亮

1 sensor   

n.传感器，探测设备，感觉器（官）

参考例句：

• The temperature sensor is enclosed in a protective well.温度传感器密封在保护套管中。
• He plugged the sensor into a outlet.他把传感器插进电源插座。

2 flushed   

a.(～with sth.)兴奋的，充满喜悦的

参考例句：

• She flushed with anger. 她气得涨红了脸。
• Her face was flushed with anger. 她的脸气红了。

3 plumbing   

n.水管装置；水暖工的工作；管道工程v.用铅锤测量（plumb的现在分词）；探究

参考例句：

• She spent her life plumbing the mysteries of the human psyche. 她毕生探索人类心灵的奥秘。
• They're going to have to put in new plumbing. 他们将需要安装新的水管。 来自《简明英汉词典》

4 cavity   

n.洞，穴，凹处，龋洞

参考例句：

• There's a cavity in the boy's tooth.这个男孩的牙上有一个洞。
• The dentist carefully located the filling in the cavity.牙医小心地把填塞的东西放入牙洞里。