pollutant burden pattern

例句：

1. 1.The city's pollution burden pattern is changing due to the new regulations.
   由于新的法规，城市的污染负担模式正在发生变化。
2. 2.The research on pollutant burden pattern has significant implications for environmental policy.
   关于污染负担模式的研究对环境政策具有重大意义。
3. 3.The government has introduced a new policy to reduce the pollution burden pattern in the industrial sector.
   政府已经引入了一项新政策，以减少工业部门的污染负担模式。