求翻译：东滩由长江下泻的大量泥沙在江海交互作用下不断加积而形成，地势平坦，该区域三面环水，北面是长江口北支水道末端，南面是北港水道，东面是长江口滨海区域。是什么意思？

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East Beach is a large number of the Yangtze river sediment in the river sea interaction continues to increase as a result, the flat terrain in the region and 3 north is the estuary waters north end is to the south, north east, Hong Kong is the estuary water coastal area.

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Large amounts of sediment in river-sea of the East by the xiaxie of the Yangtze River, formed under the interaction to continuously enhance the plot, flat, in the region on three sides by water, the North branch of Yangtze River estuary ends waterway, is the North channel to the South, is a coastal

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