上海位于长江口冲积平原，地势低洼，河网密布，拥有广阔的滩涂资源。
Shanghai in Yangtze Delta alluvial plain, low-lying, the network of waterways covered with vast shoals resources.
大坝设计，可大大提高防洪河道和保障15万人，3.7万英亩的农田，在长江下游冲积平原。
The dam is designed to greatly improve flood control on the river and protect the 15 million people and 3.7 million acres of farmland in the lower Yangtze flood plains.
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