contamination
词根词缀：
contaminant n. 致污物，污染物
contamin 污染 + ant …物 → 致污物，污染物
contaminate v. 弄脏，污染
contamin 污染 + ate 做，造成，使… → 弄脏，污染
contamination n. 污染，玷污
contaminate的名词
contaminator n. 弄脏者；致污物，污染物
contamin 污染 + ator 表名词 → 弄脏者；致污物，污染物
decontaminate v. 排除污染，净化
de 去掉 + contaminate 弄脏，污染 → 排除污染，净化
数据来源：新东方英语词汇速记大全
相关例句：
Producing relatively little radioactive fallout or contamination.
相对来说几乎不产生放射尘和污染源的。
To undertake investigation of accidents involving food poisoning or food contamination and take measures of control;
（五）对食物中毒和食品污染事故进行调查，并采取控制措施；
Special problems, such as arsenic contamination of drinking water;
诸如饮水砷污染等特殊问题；
They are protected against contamination in operation and during installation.
在安装和运转中有良好的防污染保护。
Contamination with viruses occurs in experimental green houses and in the open.
在实验温室和室外都能发生病毒的污染。
Completely free from dirt or contamination.
完全没有污垢和污染物。