Limestone has a strange property that it dissolves in rain water.

石灰石有一个奇怪的特性，能溶解于。

We observe that when it rains, water is pressed from the air.

我们也可看到下时，是从空气中挤出来的。

The rain water is then brought down to a boiler behind the range.

被引到炉灶后的锅炉里。

Take the planet COROT-7b for example, where instead of raining water it rains down rocks.

就拿 COROT-7b 行星举例来说，在这个星球上，下的不是而是岩石。

Now what happens is, rain water, that heavy rain water sort of sits on top of that bedrock sanding clay.

现在所发生的是, , 暴冲刷基岩上的砂粘土。

After an hour of rain, water had pooled at the surface, but only two earthworms emerged.

下了一个小时的后，已经聚集在土壤表了，但是只有两只大型蚯蚓浮出了表。

Their rosette formation of their leaves form all kinds of tiny basins where rain water can collect.

它们是丛生叶序形成了各种小的盆状结构能够承接。

It helps sewer systems to drain rain water quickly and guide the water to collection facilities for recycling.

该工程有助于排系统迅速排干，将引导至收集设备并进行循环。

These tough plants live on the branches of trees and extract their food from the air or from rain water.

这些坚韧的植物生长在树枝上从空气和中获得食物。

Pieces of slate are put on the roofs of houses, to keep out the rain. Water cannot pass through slate.

板石片也放在屋顶上, 用来挡。是透不过板石的。

EACH FLUSHED, OCCASIONALLY, BY RAIN WATER.

每个人偶尔都会被冲刷。

Yulia says, " I'm not drinking rain water or runoff from the roof."

Yulia 说， “我不喝或屋顶流出的。

It rains. We are thirsty. We drink the rain water.

下了。我们渴了。我们喝。

So when it rains water comes in here, so that's also a dirty kind of water.

所以下的时候会流到这里，所以那也是一种脏。

They ate bad bread and old meat, but they had lots of rain water to drink.

他们吃的是坏包和老肉， 但他们有很多可以喝。

And if you weave it really well, you might even be able to get a receptacle to hold rain water.

- 如果你编织得很好，你甚至可以得到一个盛的容器。

But as the snow continues to melt and the rain water runs down hills into creeks and rivers, the flooding threat isn't over.

但是，随着雪继续融化，顺着山坡流入小溪和河流，洪的威胁还没有结束。

Rain water that must be drunk before it touches the ground, then he can't take the medicine until it rains.

必须在接触地之前饮用 然后他不能服药 直到下。

GUPTA (voice-over): To manage that, Hope has turned her pool into a makeshift reservoir, collecting rain water for even the most basic needs.

古普塔(画外音): 为了做到这一点，霍普把她的游泳池变成了一个临时的库，为最基本的用需求收集。

When it comes to drinking water, it seems like the best option would be to collect rain water and purify it.

说到饮用，似乎最好的选择是收集并进行净化。