Petrifaction may also involve a simultaneous exchange of the originalsubstance of a dead plant or animal with mineral matter of a different composition.
石化还可能同时涉及将死亡的动植物的原有物质与不同成分的矿物质进行交换的作用。
2
The dilutions were extreme. Hahnemann was not bothered by the fact that at high dilutions, none of the originalsubstance remained.
稀释是非常极端的，至于经过高度稀释后实际已经没有原始物质残留，哈内曼并不担心。
3
Substances are divided into organic substances and inorganic substances in science. Organic substances include proteins, which is often regarded as the originalsubstance of life.