Every year almost 2 thousand million tonnes of sediment 每年大约有20亿吨泥沙在此沉淀

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tonnes sediment thousand million every almost year of
  1. they slow down, release their sediment and build deltas.
    水流减缓 留下大量泥沙 堆成了三角洲
  2. In Bangladesh the Ganges and Brahmaputra rivers join
    在孟加拉国 恒河与雅鲁藏布江的交汇处
  3. to form the world's biggest.
    形成了世界上最大的三角洲
  4. Every year almost 2 thousand million tonnes of sediment
    每年大约有20亿吨泥沙在此沉淀
  5. eroded from the Himalayas is delivered to the ocean.
    从喜马拉雅山脉上 崩塌下来的土石最终归于大海
  6. At the delta's mouth - the largest mangrove forest in the world,
    三角洲河口地带有一片 世界上最大的红树林
  7. the Sundarbans.
    孙德尔本斯红树林

来自《行星地球 第一季 第三集 Planet Earth S01E03 淡水》第 235 行

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