And yet, the ambiguity and unstable nature of once-malarial marshlands led to their ruin.

然而，曾经充满疟疾的沼泽地的模糊性和不稳定性导致了它们的毁灭。

Raising water buffalo and fishing are two of the main occupations in the Iraqi marshlands.

养殖水牛和捕鱼是伊拉克沼泽地的两项主要职业。

The marshland was home to a variety of birds.

沼泽：沼泽地是各种鸟类的家园。

As if that's not enough, soaring temperatures in the crane's marshland summer home make it a perfect breeding ground for insects.

好像这还远远不够，灰鹤夏天所居的沼泽地气温飙升，非常有利昆虫繁殖。

Pitsea was an old Victorian marshland tip off the A13 near Basildon, where no one ever knew exactly what was being dumped.

皮特西是维多利的一个沼泽圾填埋场，位西尔登附近的 A13 公路旁，没有人确切知道被倾倒的圾是什么。

He emailed me that afternoon: " I just wanted to reach out and inquire about your experience in the Dubos Point marshland."

那天下午，他给我发了一封电子邮件：“我想问问你在杜博斯角沼泽地的经历。”

There was a shortage of accommodation, so marshland was drained and built on to house the large numbers of people now living there.

那房屋紧缺，因此沼泽地被抽干用来建造房屋，为那里的很多人提供了住处。

There was a shortage of accommodation, so marshland was drained and built on the house the large numbers of people now living there.

那房屋紧缺，因此沼泽地被抽干用来建造房屋，为那里的很多人提供了住处。

High temperatures and regular flooding have transformed  these sprawling marshlands into a breeding ground for a diverse web of plants and animals.

高温和经常发生的洪水将这些广阔的沼泽地变成了多种植物和动物的繁殖地。

Seeing the situation is hopeless, Cao Cao ordered a difficult retreat through the rain and marshlands, during which more of his men fell to illness and disease.

曹操看到这种情况是没有希望打赢的，所以下令在雨水和沼泽地进行艰难的撤退，在此期间，他的更多士兵病倒。

But over thousands of years, the river continuously deposited these sediments into the Gulf of Mexico and compounding over time created newer and newer marshlands.

但数千年来，河流不断将这些沉积物沉积到墨西哥湾，随着间的推移，形成了越来越新的沼泽地。

This frightening scene is in part the consequence of a dramatic increase over the last quarter century in the development of once natural areas of wet marshland; home not only to frogs but to all manner of wildlife.

出现这种可怕情况的部分原因是在过去25年里人类极大地增强了对曾是自然区域的沼泽地的开发；这些沼泽地不仅是青蛙更是各类野生动物的家园。