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.

所以他们建造的排海平面太近，现在海平面在上升，他们或多或少地失去作用。

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

一位村民告诉我们哪里可以找到排。

No. Really they just need to find the money for something to replace the drainage channels, in order to protect against flooding now.

是的。他们现在只需要寻找资本来代替抽，以防洪涝灾害。

The canals take water to the rice fields.

把送到稻田里。

Aqueducts were constructed, which increased the public's access to water, helped improve public health, and paved the way for Rome's famed bathhouses.

罗马修建引，为公众获取源提供便利，有助于改善公共卫生，并为修建著名的罗马浴场做好准备。

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。

The aqueduct is completed, and it is good.

引已经完工 非常不错。

In an effort to add on to the system even further, there is also the Los Angeles aqueduct pulling water into the city from the Owens River in the eastern Sierra Nevada mountains.

为进一供系统，洛杉矶还有一条引，将内华达山脉东部的欧文斯河河引入城市。

Plastic bottles, gas cans and other trash collect at the bottom and on the surface of the water, clogging this hydroelectric dam and keeping water from properly entering its channels.

塑料瓶、煤气罐和其他垃圾都堆积在面和湖底，堵塞这个电站的坝，导致流无法正常进入。

The United Nations agency also found that boys and girls living near open water sources, such as ponds and irrigation ditches, are especially at risk.

该机构还发现住所周围有池塘或灌溉等开放域的儿童尤其危险。

Petra in Jordan was an ancient city which once had an aqueduct system delivering 40 million liters of water a day to 20,000 people.

佩特拉是约旦古代的一个城市，曾经的系统可以在一天内向 2 万人供应 4 亿公升的。

Rising sea levels bring in more seawater. Irrigation canals turn salty. The problem is only going to get worse as temperatures rise.

海平面上升带来更多的海。灌溉变咸。随着气温的上升，这个问题只会变得更糟。

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。

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沼泽地变成农田，于是开凿用以排干沼泽。

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

道路已经变成河流，还有危险的泥石流、小溪痕以及。

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。

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。