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.

被引到炉灶后面的锅炉里。

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，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，已经聚集土壤表面了，但是只有两只大型蚯蚓浮出了表面。

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。

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.

些坚韧的植物生长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.

板石片也放屋顶上, 用来挡。是透不过板石的。

So rain water is 100% completely fresh water.

所以是100%完全淡。

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

Yulia ， “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。

When it rains, water flows from Waikapu Stream into the pond and then into the wider area that is now pink.

下时，从怀卡普溪流入该池塘，然后流入现呈粉红色的更广阔的区域。

When rain water lands on the ground, it absorbs some of that salt.

当落地面上时，它会吸收一些盐。

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里，所以那也是一种脏。

As that rain water trickles into lakes and rivers, it carries the salt with it.

当流入湖泊和河流时，它会携带盐分。

For this purpose it is recommended  that rain water should be kept for a period of five years.

为此，建议将保存五年。

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。