Some concepts in Chinese medicine have no exact equivalent in Western medicine.中医的一些概念在西医中没有完全一样的对应物。Alchemy is the medieval obverse of modern science.炼丹术是现代科学在中世纪的对应物。Words should be the exactest correspondents of a person's thought.言语应当是人的思想的最确切的对应物。