PAHO and US CDC experts are working together on improved surveillance and reporting of cases, analysis of water samples from rivers and other water sources, and monitoring of antibiotic resistance.

泛美卫生组织和美国疾病预防控制中心的专家共同致力于改进病例监测和报告，分析从河流和其他水源得到的水样，并监测抗生素耐药性。

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This paper described in detail the oyster biology and environment reference material used in environment monitoring of ocean and rivers and prepared by environment protection system.

文章对我国环境保护系统研制出用于海洋和江河水域环境监测的牡蛎生物环境标准样品的一些情况做了详细介绍；

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The Marine Environmental Monitoring network says there have been rare instances of dead seals being found in west Wales rivers.

BBC: Terry Leadbetter says it makes sense to remove the seal