No sour, alkali, salt in the processing, reduced the pollution to the environment.

在制胶工艺中不加酸、碱、盐，减少了对环境的污染。

youdao

It decreased the consumption of raw material and power. It also reduced the pollution.

经过试生产证明，改造后降低了原料和动力消耗，减少了污染物排放。

youdao

A reasonable formulation for epoxy zinc-rich shop primer was designed through many experiments, the prepared film property was complyed with national standard, and the paint reduced the pollution.

通过大量的试验研究，设计了一个合理的环氧富锌车间底漆配方，制备出的涂料漆膜性能符合国家标准，且降低了涂料整体的污染程度。

youdao

In the long run, though, it seems the train has reduced the pollution formerly caused by cars and trucks and reduced the number of animals killed by vehicles driving through the park.

BBC: Eco-scorecard to the world��s great attractions

While a state-of-the art system installed in Chile has reduced pollution in the city of Santiago, a bungled adjustment has also left millions of passengers reeling and hundreds of others suing the government.

NPR: In Chile, Commuters Sue City over Transit System

Human activity, however, especially in the form of agriculture, deforestation, hunting and pollution, has inexorably reduced the numbers of these species, leaving many of them teetering on the brink of extinction.

CNN: All creatures great, small and disappearing