contaminant

n.致污物,污染物

污染物；被污染的人（或物）；致污源

名词

1. The water sample was found to contain high levels of contaminants.
水样中发现含有高水平的污染物。
2. The factory was identified as the main contaminant in the area.
这家工厂被确定为该地区的主要污染源。