/kənˈtæm.ə.neɪt/
to make a substance or place dirty or no longer pure by adding a substance that is dangerous or carries disease 污染;弄脏 SYN adulterate
The drinking water has become contaminated with lead.
饮用水被铅污染了。

contaminated blood/food/soil
受到污染的血液/食物/土壤

Much of the coast has been contaminated by nuclear waste.
The food which had been contaminated was destroyed.

noun
radioactive contamination
放射性污染