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What's more, the area will improve the water quality of Baiyangdian Lake, one of the largest freshwater wetlands in North China.

此外，该区将改善白洋淀的水质，白洋淀是中国北方最大的淡水湿地之一。

youdao

The water quality of the pearl river system in guangxi is better than that in guangdong.

珠江水系广西境内江段水质好于广东境内江段。

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"I am not worried about quality at all. Because again I count on not only on the regulatory agencies that determine the quality of the water in which these products are grown.

VOA: standard.2010.05.08

The project, to be carried out by United Utilities, aims to upgrade the sewer network and improve the water quality of the River Lune.

BBC: Lancaster ?18m sewer upgrade meeting held

The film highlights key water quality problems such as lack of access to safe water and sanitation, inefficient wastewater management in urban areas, water pollution caused by intensive use of nutrients and chemicals in agriculture, the invisible threat of new and emerging pollutants in water and the economic costs of water quality degradation.

UNESCO: MEDIA SERVICES

David Ford of the Alliance Party said there were also issues of water quality not being addressed and the viability of shops affected by congestion.

BBC: Adjournment debate: Parkgate quarry