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China has 61 million acres of wetlands, which include swamps, mangroves, lagoons, river deltas, lakes, and coastal areas that collectively cover about 2.5 percent of the country. 中国湿地面积大约61英亩，包括沼泽、红树林、环礁湖、河流三角洲、湖泊以及沿海一些地区，总计为国土面积的2.5%。 - 2
As the oceans swell with water from melting ice sheets, it is the crowded river deltas in southern Asia and Egypt, along with small island nations, that are most at risk. 由于冰片融化，海洋水位增加，位于南亚和埃及的人口密集的河流三角洲以及一些小岛国，面临的危险最大。 - 3
In areas where river deltas inject organic material and dissolved trace elements into the sea, for instance, it's not clear how all of the intricately related processes will affect water chemistry. 例如，在有些地区，河流三角洲将有机物质和溶解的微量元素注入海洋，目前还不清楚所有这些错综复杂的相关进程将如何影响水的化学性能。
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