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

因为这里基本上就是一个集水区。

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。

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

重要集水区的河流数量已从50年代的50,000条减至如今的23,000条。

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，它们可以相当准确地预测污水厂集水区的人口构成。

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水区。

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水基金的带领下保护内罗毕大约900万居民生命之源的塔纳河流域和支流地区。

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地区实际上拥有世界上最低的无线电干扰，而这两个地方的定位元素使其成为有效跨越两大洲的集水区。