A filter will remove most impurities found in water.

过滤器会滤掉水中的大部分杂质。

Oil is refined to remove naturally occurring impurities.

油经过提炼去除天然生成的杂质。

The air in the factory is filtered to remove impurities.

工厂里的空气经过过滤去除杂质。

Some people have attributed this longevity to their consumption of a natural mineral water, which is remarkably free from impurities.

一些人认为这些人长寿应归功于他们饮用的一种明显不含杂质的天然矿泉水。

This pulp rubbed gently on the face and the skin polishes the area, clearing it of all impurities that cause pimples, black heads and spots.

轻轻擦在脸上和皮肤的这种纸浆会使这些区域变得光亮，清除所有导致丘疹、黑头和斑点的杂质。