得的知识是广泛而深入的。每章开始部分对一般性原理的描述打破了知识的局限性。而其中每个知识点都落实到实处的独到分析，又会是你体验到知识被灵活应用的喜悦。-Obtained knowledge is extensive and in-depth. The beginning of each chapter describes the general principles to break the limits of knowledge. Knowledge points, each of which have been implemented into practice the original analysis, is that you will experience the joy of knowledge is applied flexibly.