And it was proposed by my thesis advisor Professor Weisskopf that we work on this problem to understand the effect of the impurities in scattering electrons and interfering with their motion.

VOA: special.2010.11.09

The blood of sacrificial animals is assigned by God as a detergent, if you will, to cleanse the sanctuary of the impurities that are caused by the sinful deeds of the Israelites.

祭祀动物的血液被上帝指定为清洁剂，如果你想，它可以用来清除圣所中,由以色列人的罪恶行为带来的不洁。

耶鲁公开课 - 旧约导论课程节选

And the high priest loads all of the sins and impurities of the Israelites on the head of a goat, which then carries them off into the wilderness away from the sanctuary.

大祭司将所有的罪孽,和以色列人的不洁放在一头山羊的头上，山羊将这些罪孽和不洁带到远离圣所的荒野以外。

耶鲁公开课 - 旧约导论课程节选

These impurities in the air cause allergic reactions.

VOA: special.2009.07.28

All the components that make up the coffee, and all the impurities, etcetera. cadmium, heavy metals, arsenic, whatever is in your coffee.

以及所有的杂质等等，钙，重金，砷，任何在你咖啡里的东西。

麻省理工公开课 - 热力学与动力学课程节选

He calls it "cow power to horsepower." Leonhardt says the challenge is to cost-effectively remove impurities from the manure-derived methane.

VOA: standard.2010.02.23

In the public health care system, for example, only two hospitals are equipped with dialysis machines, which remove impurities from the blood when the kidneys can not do it.

VOA: standard.2010.05.30

Those impurities rapidly corrode engine parts.

VOA: standard.2010.02.23