They could train farmers to allow the sediment to settle out of the wastewater before using it-thereby avoiding the worst of the faecal matter.

还可以培训农民，让他们在使用废水之前就通过沉淀来净化它，从而避免出现最坏的残渣问题。

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Sediment particles is suspended in the sediment-laden flow because of the flow turbulence, and settle down due to gravity action.

挟沙水流中的泥沙颗粒因水流紊动而悬浮，同时受重力作用而下沉。

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Let it settle for 5 minutes, then skim any remaining foam from the top. Carefully pour the clear liquid into a cup, leaving the light brown sediment in the pan.

把黄油搁置5分钟，撇去上面的泡沫，小心地把锅内的透明液体倒入杯中，留下褐色的沉淀物。

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Let it settle for 5 minutes, then skim any remaining foam from the top. Carefully pour the clear liquid into a cup, leaving the light brown sediment in the pan.

把黄油搁置5分钟，撇去上面的泡沫，小心地把锅内的透明液体倒入杯中，留下褐色的沉淀物。

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