副主题包括：特许经营业务和小型企业管理。
Subtopics include: franchise operations and small business management.
主题和副主题都相互匹配，每卷书都有助于说明并答复另一卷书。
The themes and sub-themes match, each one helping explain and answer the other.
围绕这个中心主题发散相关副主题，并将每个副主题和中心用一条线连接起来。
Develop the related subtopics around this central topic, connecting each of them to the center with a line.
应用推荐