简单说，一个系统是一个复杂实体，提供了一些价值的真实结果。
Put simply, a system is a complex entity that provides some tangible result of value.
现代的组织是十分复杂的实体，其中在不设置为项目的情况下就可以常规地完成事情。
A modern organization is a fairly complex entity where things routinely get done without being set up as projects.
后面您将看到有些情况下这些属性值本身也可能成复杂的实体。
Later, you will see that a case can be made for some of those property values to be complex entities themselves.
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