说明：  订餐系统需求分析，是每个编写系统之前必做的。需求分析是每个系统最重要的一部分，有了需求分析才能编出好的系统
(The reservation system needs analysis, is a must do before each writing system. Needs analysis is the most important part of each system, with the needs analysis in order to compile a good system)