去年十月，联合国环境署宣布扬子江及珠江入海口为死水区。
In October, the United Nations Environment Program declared the Yangtze and Pearl River estuaries dead zones.
科学家知道导致死水区是因为含氮量太高，但解决方案可能难以被接受。
Scientists know what causes the dead zone — too much nitrogen, but the solution might be hard to accept.
不过，目前他们的面积和出现次数都在上升：目前发现的死水区域已经有超过400个。
But they are increasing in both size and number: dead zones have now been reported in more than 400 areas.
未来几月的暴风雨将会翻动墨西哥湾的水，死水区也会消失，但在明年又会重现。
Storms in the next few month will mix the gulf water and the dead zone will disappear, but it will return next year.
科学家表示，如果不采取措施减少密西西比河的含氮量，未来几年死水区会愈发扩大。
And scientists say it will grow larger in years to come, if something is not done to reduce the amount of nitrogen in the Mississippi River.
对大面积“死水区域”来说化肥残留物是罪魁祸首，在墨西哥湾，氧气耗尽的死水区域几乎没有海洋生物生存。
Fertilizer runoff is responsible for a vast "dead zone," an oxygen-depleted region where little or no sea life can exist, in the Gulf of Mexico.
我们在设计太阳能热水器不锈钢水箱时，水箱的开口位置应尽量注意消除死水区，或者尽量减少死水区。
We are in the design of solar water heater stainless steel water tank, the tank opening position should pay attention to eliminate the dead zone, or try to reduce the dead zone.
去年十月，联合国环境署宣布扬子江及珠江入海口为死水区。这两处地区水的含氧量不足以维持鱼类的生存。
In October, the United Nations Environment Program declared the Yangtze and Pearl River estuaries dead zones. The water doesn't have enough oxygen in it to support fish.
当流量在一定范围内变化时，主流区下方均有漩涡低速区或死水区，该区域的大小与流量有关，其位置基本不变。
There is a whirlpool or dead zone below the main water flow zone when the flow changes and the size of which is related to flow but its location basically unchanged.
目前低氧水域产生的一氧化二氮占海洋一氧化二氮净产出的一半，如果这些“死水区”继续扩大，我们将看到大气中的一氧化二氮会有更加显著的增加。”
With low-oxygen waters currently producing abouthalf of the ocean's net nitrous oxide, we could see an additionalsignificant atmospheric increase if these 'dead zones' continue toexpand.
目前低氧水域产生的一氧化二氮占海洋一氧化二氮净产出的一半，如果这些“死水区”继续扩大，我们将看到大气中的一氧化二氮会有更加显著的增加。”
With low-oxygen waters currently producing abouthalf of the ocean's net nitrous oxide, we could see an additionalsignificant atmospheric increase if these 'dead zones' continue toexpand.
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