地理漫步·世界地理英语30篇（8）
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River Deltas Form Where Land Meets Sea
三角洲形成于陆海交汇之处
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Deltas build where rivers drop sediment as they enter slower water.河流入海（或入湖）时流速减缓，泥沙沉积，从而形成三角洲。
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They often spread into fan-shaped or bird-foot patterns near coastlines.三角洲常在海岸附近呈扇形或鸟足状扩散。
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Rich soils make deltas ideal for farming rice, wheat, and vegetables.肥沃的土壤使三角洲成为水稻、小麦和蔬菜种植的理想之地。
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Cities like Shanghai and New Orleans sit on active delta land.上海和新奥尔良等城市就坐落在活跃的三角洲地带。
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Sea level rise and dams upstream threaten delta stability and growth.海平面上升和上游水坝威胁着三角洲的稳定与发育。
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Mangroves and marshes buffer deltas from storm surges and erosion.红树林和沼泽可缓冲风暴潮冲击、减轻侵蚀。
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Sediment supply, tides, and waves all shape each delta uniquely.泥沙供给、潮汐和波浪共同塑造每个三角洲的独特形态。
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These dynamic zones link freshwater, land, and marine systems.这些动态区域连接着淡水、陆地与海洋系统。