impure /ɪmˈpjʊə/ TEM4

• 1. 

  ADJ A substance that is impure is not of good quality because it has other substances mixed with it. 不纯的

  例：

  ...diarrhoea, dysentery and other diseases borne by impure water.

  …不洁的水所引起的腹泻、痢疾和其他疾病。