man-made environmental contaminant

例句：

1. 1. The factory has been found to be a major source of man-made environmental contaminants.
   该工厂被发现是主要的人造环境污染物来源。
2. 2. The government is working on a plan to reduce the amount of man-made environmental contaminantsin our environment.
   政府正在努力制定计划，以减少我们环境中的人造环境污染物数量。
3. 3. Many people are concerned about the impact of man-made environmental contaminants on the health of their communities.
   许多人对人造环境污染物对社区健康的影响表示担忧。