1. Noise pollution, for instance, is an extension of air pollution. ���磬������Ⱦ�����ǿ�����Ⱦ��һ�����졣
2. The model synthesises factors of nature and noise pollution in city. ��ģ���ۺ��˳�����Ȼ���غ�������Ⱦ���ء�
3. Humans have vast karma for over consumption and pollution of the sea. �����ڹ������ĺ���Ⱦ�����������˾��ҵ����
ӢӢ����
n.
1. undesirable state of the natural environment being contaminated with harmful substances as a consequ
2. the state of being polluted
3. the act of contaminating or polluting; including (either intentionally or accidentally) unwanted sub