编写格式：
格式1： 左手册 + 右翻译； 格式2：上手册 + 下翻译
1 mysql> ? contents 2 You asked for help about help category: "Contents" 3 For more information, type 'help <item>', where <item> is one of the following 4 categories: 5 Account Management #用户管理 6 Administration 7 Compound Statements 8 Contents 9 Data Definition 10 Data Manipulation 11 Data Types 12 Functions 13 Geographic Features 14 Help Metadata 15 Language Structure 16 Plugins 17 Procedures 18 Storage Engines 19 Table Maintenance 20 Transactions 21 User-Defined Functions 22 Utility