impurities
US /ɪmˈpjʊər.ə.tiz/
UK /ɪmˈpjʊə.rɪ.tiz/
复数名词
杂质, 不纯物
substances that are present in something but are not an essential part of it, especially unwanted substances
示例:
•
The water filter removes most of the impurities.
滤水器能去除大部分杂质。
•
The gold was refined to remove all impurities.
黄金经过提炼以去除所有杂质。