the pleasure one feels – unsullied by impure motives – from helping a fellow creature未掺杂不纯动机的助人的愉悦

the suggestion that tap water is impure对自来水不纯净的暗示

These people were perceived by members of higher castes as impure and degraded.这些人被上层社会人士视为渎神的、堕落的。

It is true that God has decreed certain animals impure.诚然, 上帝已旨令我们说, 某些动物是渎神的。

Root out any which have flowers of impure colour or irregular shape.把有杂色或形状不规则的花都去掉。

The overall result was impure Americana.整体效果是不纯正的美式风格。