有机物可能会进行部分分解，并耗尽沉积物中的溶解氧。
The organic matter may partially decompose, using up the dissolved oxygen in the sediment.
大多数雨林土壤都很贫瘠，因为它们缺乏矿物质，而且高温和强降雨会在到达森林地面后的4年内破坏土壤中的大部分有机物。
Most rainforest soils are thin and poor because they lack minerals and because the heat and heavy rainfall destroy most organic matter in the soils within four years of it reaching the forest floor.
这种溶解有机物直到最近都不被认为是总体当中的重要组成部分，但是焦博士注意到其在海洋中的散布有点奇特。
This dissolved organic matter was not, until recently, thought to be an important component of the total. But Dr Jiao noticed something odd about its distribution in the sea.
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