为了减少海水污染，我们会研究进一步改良市区策略性污水处理系统的几个方案。

To help tackle the problem of water pollution, we will look to develop options for the further improvement of the strategic sewage system which serves the main urban area.

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为了提高我国污水处理过程自动控制水平，研究污水处理过程的模拟及其控制策略非常有意义。

For the sake of improving our country's wastewater process automation control level, it is very useful to do research on its model simulation and control strategies.

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