impure
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：
Not holy because unconsecrated or impure or defiled.
因为不圣洁，不纯洁和被污染而不神圣的。
Objective: to study the methods for the determination the contents of impure chloramphenicol tablets.
目的：考察含有杂质的氯霉素片的含量测定方法。
But there are still impure elements to our relationship.
但是我们的关系里总有不纯之处。
I believe I responded well until he asked me if I had done impure things with animals.
我觉得自己回答的挺好，直到他问我有没有和动物做过什么不洁的事情。
Limonite, heavily, hydrated and impure oxides, is important only in Europe.
褐铁矿含水量大，为不纯氧化物。主要分布在欧州。
Impure sodium sulfate used in making paper pulp, soaps and detergents, glass, ceramic glazes, and dyes.
不纯的硫酸钠，用于制纸浆，肥皂和洗衣粉，玻璃，陶瓷釉和染料。