The digestive canal is, so to speak, the primary and most ancient laboratory of living matter.
可以说，消化道是生命物质最初和最古老的实验室。
轻易不动感情的人，一旦动情，就会地裂山崩，把自己燃烧成一堆灰烬，被他爱上的人，也会被这狼烟烈火烧烤得痛不欲生。
To understand chemistry at its most fundamental level, we must look at the dance of electrons in molecules.