impurities
US /ɪmˈpjʊər.ə.tiz/
UK /ɪmˈpjʊə.rɪ.tiz/
複数名詞
不純物, 異物
substances that are present in something but are not an essential part of it, especially unwanted substances
例:
•
The water filter removes most of the impurities.
浄水器はほとんどの不純物を除去します。
•
The gold was refined to remove all impurities.
金はすべての不純物を取り除くために精錬されました。