所以沉积物被运输，然后沉积，随着时间的推移，它在地球表面形成了层。
So sediment is transported and then deposited and it forms layers on the Earth's surface over time.
相比于大陆冰川沉积物，海洋沉积物提供了更完整的更新世时期的地质记录。
Ocean sediments presented a much more complete geologic record of the Pleistocene than continental glacial deposits did.
红树林根系有能力吸收并很好地截留水中的沉积物和污染物，这些沉积物和污染物在进入海洋之前流经这些根系。
Mangrove root systems have the ability to absorb and well trap sediments and pollutants in water that flows through them before they enter the ocean.
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