The goal and method of the investigation of polluted bed mud of Chaohu Lake dredging project in Hefei were discussed, as well as its result was analyzed.
概述巢湖清淤合肥项目区域污染底泥调查的目的和方法，并对调查结果进行分析。
We're dredging (up) mud (from the river bed).
我们正在(从河床)挖淤泥。
We're dredging (up) mud (from the river bed).
我们正在(从河床)挖淤泥。
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