His sculpture also makes a statement about the harmful effects that waste and pollution have on the environment.

VOA: special.2009.11.13

Other cultures focused more on an ethics of divinity where notions such as purity, sanctity, pollution and sin are relevant.

还有的文化则重于神性道德,他们的道德则与纯结，神圣，亵渎，罪孽等有关。

耶鲁公开课 - 心理学导论课程节选

The scientists on Antarctica know better than anyone about the effects of pollution and human behavior on this important treasure of a continent.

VOA: special.2009.06.03

"The good news is that when China sets its sights on reducing pollution,it has shown an extraordinary ability to reduce emissions."

VOA: standard.2010.04.07

Dr.Brook, who chaired group that produced a scientific statement on air pollution and cardiovascular disease for the American Heart Association.

VOA: standard.2010.08.04

She has donated the $150,000 prize to nonprofit organizations so others can keep a close eye on pollution from livestock waste in their communities.

VOA: standard.2010.05.06

Most of the money was spent of dredging equipment. But Tuman and others who live on the water say these machines rarely work and have not helped with the pollution problem.

VOA: standard.2009.12.16

Bigger livestock herds are putting greater pressure on land resources and disrupting some ecosystems and the animals generate significant amounts of water and air pollution, including methane, a climate-changing greenhouse gas.

VOA: standard.2010.02.22