mid-15c., from Middle French impur (13c.), from Latin impurus "unclean, filthy, foul," from assimilated form of in- "not, opposite of" (see in- (1)) + purus "pure" (see pure). As a noun from 1784. Related: Impurely.
实用例句
1. Impure drinking water is a cause of disease.
不洁的饮用水是引发疾病的一个原因.
来自《简明英汉词典》
2. Impure novels have brought and are bringing much misery on the world.
不洁的小说已经给世界带来不幸,还将带来更多的不幸.
来自辞典例句
3. The air of a big city is often impure.
大城市的空气往往是污浊的.
来自辞典例句
4. You've got a dirty mind , ie You have impure thoughts.
你满脑子下流事.
来自辞典例句
5. Many of the deposits are too small, too impure.