im·pu·ri·ty
noun/ɪmˈpjʊərəti/
/ɪmˈpjʊrəti/
(plural impurities)
- [countable] a substance that is present in small amounts in another substance, making it dirty or of poor quality
杂质 - A filter will remove most impurities found in water.
过滤器会滤掉水中的大部分杂质。 - The substance is free of impurities.
该物质不含杂质。 - The water contains impurities which make it unsuitable for drinking.
水里含有杂质，不适合饮用。
- A filter will remove most impurities found in water.
- [uncountable] the state of being dirty or not pure
肮脏；不纯；淫秽
Word Originlate Middle English: from French impurite or Latin impuritas, from impurus, from in- ‘not’ + purus ‘pure’.