And that's because this is essentially a catchment area.

因为这里基本上就是一个集区。

In theory, it's just a tube and catchment system.

理论上，它只是一个管道和集系统。

One of them is a simple catchment system powered by bubbles, as in whew.

其中一个方法就是一个简单的集系统，由气泡驱动，就像这样——呼。

In the 1950s the country had 50,000 rivers with catchment areas of 100 square kilometres or more.

在二十世纪五十年代的时候，流域面积达到一百平方公里甚至更多的河流达到了五万条。

It's the largest water catchment in the country, almost one-sixth the size of Singapore.

它是该国最大的集区，面积几乎是新加坡的六分之一。

The number of rivers with significant catchment areas has fallen from more than 50,000 in the 1950s to 23,000 now.

重要集区的河流数量已从50年代的50,000条减至如今的23,000条。

Or even install a rainwater catchment system.

甚至安装雨收集系统。

595. The rest of the material was deposited part way down the catchment.

其余的物质沉积在域中。

But Dr Samanipour found that in combination they could predict quite accurately the demographic make-up of a sewage plant's catchment area.

但Samanipour博士发现，结合起来看，它们可以相当预测污厂集区的人口构成。

I've met young people who have developed rainwater catchment systems and cheap ways to dig wells to improve water availability for Jordanians.

我遇到过一些年轻人，他们开发了雨集系统和廉价的打井方法，以改善约旦人的用状况。

And they will protect our water catchments.

他们将保护我们的集区。

He launched Liquify, a non-profit with a mission to provide sustainable filtration systems, help residents build recharge wells that replenish aquifers, and water catchment systems to collect rainfall for other uses.

他创立了Liquify公司，这是一个非营利组织，其使命是提供可持续使用的过滤系统，帮助居民建造补充蓄层的补给井，以及将雨收集作其他用途的集系统。

The bumpy drive to it is famous for incredible views; you'll see how the falls are the catchment area for run-off from the peaks and inland valleys all around.

通往它的崎岖不平的道路以令人难以置信的景色而闻名。您将看到瀑布如何成为周围山峰和内陆山谷径流的集区。

And that is why 10 companies, led by the Nature Conservancy, created the Nairobi Water Fund-to protect the watershed and catchment areas along rivers that supply water to approximately nine million people in Nairobi.

因此10家公司在自然保护协会创立的内罗毕基金的带领下保护内罗毕大约900万居民命之源的塔纳河流域和支流区。

And then through all the tiny little perforations, small air bubbles will start to rise towards the surface, which create that upwards current that can lift plastic towards the surface, and then guide it towards the catchment system.

一些小气泡会因压力穿过管子上的微小孔洞，从下而上冒向面，从而形成上升气流，将塑料冲到面上，然后引到集系统中。

Well, these parts of South Africa and Australia actually have some of the lowest radio interference anywhere in the world, and positioning elements in both those places gives it a catchment area that effectively spans two continents.

好吧， 南非和澳大利亚的这些区实际上拥有世界上最低的无线电干扰，而这两个方的定位元素使其成为有效跨越两大洲的集区。