contamination evaluation的用法和样例：
例句
- The evaluation system for air pollutants by vehicles' emission in Tianjin is established with certain accuracy,advantage and practicality in Tianjin.
依据城市机动车空气污染评价方法确立了天津市空气污染物机动车污染的评价体系。 - The background analysis and pollution evaluation of groundwater is an important content of environmental protection and pollution control.
地下水的水质分析与污染评价是地下水保护与污染控制的重要内容。
