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汉语拼音：wū rǎn yuán

污染物的发生源。通常指向环境排放污染物或对环境产生有害影响的场所、设备和装置。按污染物来源，分天然污染源和人为污染源；按排放污染物的空间分布方式，分点污染源、线污染源和面污染源。控制污染源是改善环境质量的有效途径。

• Waste and pollution management: Sources of pollution should be identified and appropriate actions have to be taken in case of necessity .

  废物污染管理应签定污染源，必要时采取适当的措施。

• The point-polluting may spread to the lower reaches of a river with the scour of the stormwater.

  由于雨水的冲刷，还可能将点污染源扩大造成下游水系的污染。

• The precise sources of the PCB plume should be pinned down and used to complete the pollutant inventories of African countries, she says.

  她说，这些氯联苯的污染源必须被清除掉，以完善非洲国家污染物清单。

• The kiln is an obvious heavy user of energy and in many cases one of the biggest sources of pollution in a ceramics factory.

  窑炉需要使用大量的能源，在很多情况下，它是陶瓷工厂里最大的污染源。

• There shall be no harmful gas, soot, dust, radioactive substances or other diffusible sources of pollution around the enterprise.

  企业周围应无有害气体、烟尘、灰尘、放射性物质及其他扩散性污染源。

• The authorities seem to be encountering some difficulties as to the exact source of salmonella contamination.

  监察部门又遇到了别的麻烦--沙门氏菌的确切污染源在哪里。

• As the automobile exhaust is one of the biggest pollutant source, improving the quality of gasoline is imperative under this situation.

  由于汽车尾气排放是最大的污染源之一，提高汽油质量势在必行。

• Now there's new focus on a pair of methane sources that we usually don't think of as natural polluters: wetlands and rice paddies.

  现在两个过去不认为是自然污染源的甲烷气体排放源又成为了关注的焦点，即湿地和稻田。

• Dyes and their effluent have become one of the main sources of water pollution, and are difficulty to be degraded by organism.

  染料属生物难降解有机物，染料和印染废水已成为当前最重要的水体污染源之一。