special contamination

例句：

1. 1.The factory has been subject to special contamination from the nearby river.
   这家工厂受到了附近河流的特殊污染。
2. 2. Special contamination can occur when waste is not properly disposed of.
   不当处理废物时，可能会发生特殊污染。
3. 3. The government is working on a plan to reduce the level of special contamination in the city.
   政府正在制定计划以减少城市中特殊污染的水平。