total discharge

例句：

1. 1. The total discharge ofthe river is a concern for environmentalists.
   河流的总排放量是环保人士的关注点。
2. 2. The company has a policy to reduceits total discharge of hazardous chemicals.
   该公司有一项政策来减少其有害化学物质的总排放量。
3. 3. The total discharge of pollutants into the ocean is a majorenvironmental issue.
   将污染物总排放到海洋是一个主要的环境保护问题。