Organic pollution is the major diffuse pollution ta the Xili Reservoir in Shenzhen City.

深圳市西沥水库受到的面源污染多为有机物污染。

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Diffuse pollution is one of the important sources that cause the deterioration of water quality in city.

城市面源污染是我国水环境质量恶化的重要原因之一。

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By the end, I even had a funny fondness for the diffuse, pearly glow that the pollution sometimes gave the sunlight.

到后来，我甚至还对因空气污染形成的那种弥散的、灰蒙蒙的光线有了一种非常古怪的好感。

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"The MCS recognises that Combined Sewer Overflows (CSO) are necessary to avoid sewage flooding roads or people's houses, and that diffuse pollution is an entrenched and difficult problem, " Mr Bell said.

BBC: NEWS | UK | Heavy rains 'pose bathing risk'

The contribution of diffuse sources of pollution to bathing water failures, both rural and urban, is being investigated.

BBC: Beaches 'need to improve'