This process is termed "replacement" because solutions have dissolved the original material and replaced it with an equal volume of the new substance.

这个过程被称为“置换”，因为溶液溶解了原来的物质，并用等量的新物质取而代之。

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Saturated: After the maximum amount of a substance has dissolved, such that no more will go into solution, we say the solution is saturated with the substance.

饱和：已经溶解最大量之溶质之后，而此溶质不再进入溶液中，我们称此溶液已达饱和。

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One of the key issues in the marine ecosystem dynamics studies is to accurately estimate the dissolved biogenic substance flux across the sediment-seawater interface in the shelf sea.

陆架浅海沉积物—海水界面上的溶解态生源物质通量的准确估算是海洋生态系统动力学研究中的关键性问题之一。

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