Students can better understand the concept of democracy by contrasting it with authoritarianism.
通过将民主与专制进行对比，学生能更好地理解民主的概念。
The teacher used a Venn diagram to illustrate learning by contrast, showing the similarities and differences between two theories.
教师使用维恩图来展示对比学习，展示了两个理论之间的相似性和差异性。