The canals take water to the rice fields.

把送到稻田里。

The aqueduct is completed, and it is good.

引已完工 非常不错。

Yeah, the Romans are famous for their aqueducts.

是的，罗马人的非常有名。

One of the villagers shows us where to find there overflow channel.

一位诉我们哪里可以找到排。

But how am I going to get these people to build this ditch for me?

但是我怎么能让这些人为我挖这个呢？

We've had a delightful correspondence about the Delaware Aqueduct.

我们曾就特拉华的问题有过愉快的交流。

In the warmth of early summer, the red-crowned cranes have moved into the farmland waterways.

在初夏的温暖里，丹顶鹤已搬到农田的里。

It was blocked by the system of canals, embankments and wastewater drains built parallel to the river.

它被与河流平行的运河、堤防和污排系统所阻塞。

But also a lot of these aqueducts ended at great fountains, but also in the great public baths.

这些也最终做成喷泉或引到公共浴池。

Well, apparently back in the 1950s they built channels to drain away the water in case of flooding.

好的，在1950年的时候，他们建造将抽干以防洪涝灾害。

So one of the most impressive structures that I'm seeing is this aqueduct, this highway for water.

其中一个令人叹服的结构就是我现在看到的，的高速公路。

Roads have turned to rivers, and there have been dangerous muddy debris flows and burn scars and waterways.

道路已变成河流，还有危险的泥石流、小溪痕以及。

Government and business officials wanted to turn the Everglades into farmland and began building canals to drain the swamp.

政府和企业官员想要将大沼泽地变成农田，于是开凿用以排干沼泽。

The coin found in a ditch at a small Roman farmstead depicts the emperor Ulpius Cornelius Laelianus.

硬币是在一处罗马农场附近的中发现的，硬币上刻的是莱利亚努斯国王。

In it, he developed a theory that intelligent life had created waterways all over the surface of Mars.

在这本书里，他提出一个理论，智慧生命在整个火星的表面创造。

So it seems like the likely source of water pollution would be factories, runoff from farms, sewage from cities.

所以看来最可能的污染源是工厂，农场的和城市的下道。

His theory of Martian life became so complex that he made maps of cities and waterways on the planet.

他的关于火星生命的理论变得非常复杂，以至于他制作关于火星的城市和的地图。

Hundreds of miles of drainage canals were built in the wetlands.

数百英里的排建在湿地中。

The channel is teeming with insects, fish and frogs, but the parents can barely keep up with their gangly offspring's appetite.

里到处都是昆虫、鱼和青蛙，但父母们几乎无法满足它们瘦长后代的胃口。

So they built the drainage channels too close to sea level, and now sea levels are rising, they're more or less useless.

所以他们建造的排离海平面太近，现在海平面在上升，他们或多或少地失去作用。