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

石灰石有一个奇怪特性，能溶解于雨水。

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

我们也可看到下雨时，水是从空气中挤出。

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

雨水被引到炉灶后面锅炉里。

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

就拿 COROT-7b 行星举例说，在这个星球，下不是雨而是岩石。

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

下了一个小时雨后，水已经聚集在土壤表面了，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盆状结构能够承接雨水。

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

该工程有助于排水系统迅速排干雨水，将雨水引导至收集设备并进行循环。

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, 挡雨。水是透不过板石。

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

现在所发生是, 雨水, 暴雨冲刷基岩砂粘土。

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

这些坚韧植物生长在树枝从空气和雨水中获得食物。

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

下雨时，水从怀卡普溪流入该池塘，然后流入现在呈粉红色更广阔区域。

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

Yulia 说， “我不喝雨水或屋顶流出水。

So rain water is 100% completely fresh water.

所以雨水是100%完全淡水。

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

下雨了。我们渴了。我们喝雨水。

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

所以下雨时，水会从这里进，因此这也是种脏水。

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

为了这个目，建议雨水应保存五年时间。

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

当雨水落在地时，它会吸收一些盐分。

But if you want to know what it's going to be raining, water, men, then You need weather premium.

但若你想知道将要下雨是水还是人，那就得订阅高级天气服务了。

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

当雨水渗入湖泊和河流时，它会带着盐分一起流进。

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，雨水顺着山坡流入小溪和河流，洪水威胁还没有结束。