Word · Frequency #15794
impurity
杂质
worthless or dangerous material that should be removed
指物质中的杂质，不指“不纯”的状态。
- 1.
The condition of being impure; because of contamination, pollution, adulteration or insufficient purification.
不纯的状态；因污染、掺假或净化不足所致。
- 2.
worthless or dangerous material that should be removed
应去除的无用或有害杂质
- 3.
A component or additive that renders something else impure.
使其他物质不纯的成分或添加剂。
- 4.
the condition of being impure
不纯；掺杂的状态
- 5.
A state of immorality or sin; especially the weakness of the flesh: inchastity.
不道德或罪恶的状态；尤指肉体的软弱:不贞洁。
不纯的状态；因污染、掺假或净化不足所致。；应去除的无用或有害杂质；使其他物质不纯的成分或添加剂。；不纯；掺杂的状态；不道德或罪恶的状态；尤指肉体的软弱:不贞洁。
In use
The water filter removes harmful impurities from the drinking water.
Scientists test the gold for impurities before it is sold.
A tiny impurity in the metal can weaken the entire structure.
there were impurities in the water
an impurity in sth
impurity 作可数名词时指“一种杂质”；介词 in 后接被污染的物质。
Scientists found an impurity in the sample.
科学家在样本中发现了一种杂质。
remove impurities from sth
impurities 常用复数，与 remove、filter、separate 等动词搭配。
This filter removes impurities from the water.
这种过滤器能去除水中的杂质。
Connections
Collocations
- remove impurities
- 去除杂质
- Water filters remove impurities from drinking water.滤水器去除饮用水中的杂质。
- filter out impurities
- 过滤掉杂质
- The system filters out impurities in the air.该系统过滤掉空气中的杂质。
- contain impurities
- 含有杂质
- This sample contains impurities that affect the results.这个样本含有影响结果的杂质。
- trace impurities
- 微量杂质
- Even trace impurities can weaken the material.即使是微量杂质也会削弱这种材料。
- harmful impurities
- 有害杂质
- The process removes harmful impurities from the oil.该过程去除油中的有害杂质。
- chemical impurities
Learner notes
Memory Tip
联想：im（不）+pure（纯净）+ity（性质），纯净水里掉进泥沙，就是 impurity（杂质、不洁）。
Context & Register
语域：neutral 常见场景：chemistry and materials、quality inspection、general description of substances impurity 表示“应去除的杂质、不纯物”时通常为中性词，多用于化学、材料或质检等说明性语境，也较常见于一般性描述。日常口语中较少用到，但也不算生硬。
Pronunciation & Spelling
purity、security、obscurity、maturity 与 impurity 押韵，重音后均为 /ʊrəti/；impunity 拼写相似但读音不同，注意区分。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.