Over the years,researchers have identified several substances in the blood that can serve as what they call cardiac biomarkers.

VOA: special.2009.07.15

We also, therefore, have no sense that God is imminent in nature or tied to natural substances or phenomena.

我们也不知道自然中神灵将要诞生,或者是与某些自然物质及自然现象有关。

耶鲁公开课 - 旧约导论课程节选

And according to Klawans and others, ritual impurity arises from physical substances and states which are not in themselves sinful.

据克洛文和其他人所说，仪式的不洁是由自身有罪的,物质和状态引起的。

耶鲁公开课 - 旧约导论课程节选

The experts said some plant chemicals are high in antioxidants -- substances that remove harmful chemicals from the body.

VOA: special.2009.05.19

So Klawans notes in the article you read that the physical substances and states that are labeled impure and are therefore designated as antithetical to the realm of holiness are states that are associated with death on the one hand, and procreation on the other. Why should this be?

克洛文对你们现在读到的文章有过这样的说明,那些被贴上不洁标签,然后被认为和神圣的领域相对立的物质和状态,一方面来说都和死亡有关系，而另一方面和生殖有关，这是怎么回事呢？

耶鲁公开课 - 旧约导论课程节选

He says the substances are especially dangerous because they travel through the air and stay in the atmosphere, soil and water.

VOA: special.2009.06.23

Some of the most important helpers in the job of good health are the substances we call vitamins.

VOA: special.2009.04.21

Mister Cooper says the substances build up in the cells of plants, animals and human beings.

VOA: special.2009.06.23

Iron is a micronutrient. Micronutrients are important substances that are found in small amounts in foods.

VOA: special.2011.01.05

Allergies are abnormal reactions of the immune system in response to otherwise harmless substances.

VOA: special.2009.07.28

The institute has scoured the results of international studies to find antigens substances that provoke an immune response in the body that could be a potent weapon against malaria.

VOA: standard.2010.01.20

It's also not using any sort of radiation, (which could destroy DNA remnants of the mummies.) "And finally, by using this Terahertz imaging, you eventually may be able to look at the substances within the mummy,for example, the embalming liquid used in the Egyptian way of embalming.

VOA: standard.2010.05.05