1. The river was contaminated with waste from the factory. �����������ӹ��������ķ�������Ⱦ��
2. Others like to try and blow water back up into the bottle, which can contaminate the entire supply. �е�����ϲ������ˮ��������ƿ�������Ū��������ˮƿ���ѭ��ˮ��
3. We continually wage war on them, for they contaminate our food, carry diseases, or devour our crops. ����ϵ�ͬ���涷������Ϊ������Ⱦʳ���������������ׯ�ڡ�
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v.
1. make impure
2. make radioactive by adding radioactive material