现代沉积物是湖泊营养盐和污染物的重要储藏库，在一定条件下，这些内源污染负荷可能成为水体富营养化的主导因子。
The modern sediment is an important storehouse of the nutrient salt and pollutant in lakes. Under proper conditions, these internal contamination load sources can cause the eutrophication of lakes.
海洋沉积物已经成为海洋水体环境中持久性的、有毒的化学污染物的主要存贮地。
In a word, marine sediments has become the main reservoir of persistent and poison chemical pollutants in marine environment.
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