为执行建模并不是一个新概念，因为这种方式已经在传统的软件和系统开发中被用了有一些时间了。
Modeling for execution is not a new concept, as this approach has been used in traditional software and system development for a while.
作者将心理概念看作软件工程行业中的一个重要杠杆。
The author considers psychological concepts as a big lever in the software engineering industry.
这是一个面向对象的软件项目，使用UML来描述系统中的各种概念与关系。
This will be an object-oriented project using the Unified Modeling Language (UML) to represent concepts and relationships.
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