Excessive nitrogen in the water system contributes to the "dead zone" found at the mouth of the Mississippi and other rivers.

水系中的过量氮是造成密西西比河与其他河流河口处“死亡区”的元凶。

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The report also puts a priority on improving water quality, particularly on countering the giant dead zone that develops in late spring in the Gulf of Mexico.

报告也很重视水质的提高，尤其是应对墨西哥海湾晚春时节出现的巨大死区。

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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.

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。

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