contaminate
单词辨析：
指因含有其他物质而不纯或不洁的，往往指含有劣质的物质。
impure silver
不纯的银
The salt you bought from the market was slightly impure.
你从市场上买回的盐含有少量杂质。
He was a drug dealer who sold impure heroin.
他是个贩卖不纯海洛因的毒贩。
指水、食物等被有害物质污染了的。
Data from the contaminated specimen cannot be used.
根据被污染的样品得到的数据是不能使用的。
People in the area could fall ill after drinking contaminated water.
那一地区的居民可能会在饮用受到污染的水后患病。
Her infection was traced to contaminated food.
她的感染被查出是由受到污染的食物所致。
指水、空气、土壤等被有害物质污染而不适合使用的。
Experts are investigating why the lake is seriously polluted.
专家正在调查为什么这个湖会受到严重污染。
The inhabitants are being warned to avoid bathing in the polluted river.
市民被提醒不要在那条遭污染的河里游泳。
The aim of the new project is to clean up polluted land.
新项目的目标是整治受污染的土地。
相关例句：
Any delay in the clean-up poses problems, as radioactive particles may seep into groundwater and contaminate crops.
清理工作的任何延误都将导致一系列问题，因为放射性粒子有可能会渗入地下水并污染作物。
Some become magnified in the food web and can contaminate fish stocks.
一些污染物在食物链中被放大而污染鱼类资源。
Have to be thrown away later and contaminate our environment.
稍后将会全数丢弃，这会污染我们的环境。
Do not contaminate mattress with chlorine or insect repellents, which can damage the fabric coating.
不要氯或杀虫剂污染气垫，这些会损坏织物的涂层。
If we had to clean our own drinking water, we probably wouldn't contaminate it.
如果我们必须亲自清洁自己喝的水，我们很可能就不会污染它了。
Contaminate your bed and you will one night suffocate in your own waste.
如果你弄脏了自己的床，终有一天你会窒息在你自己丢弃的垃圾之中。