追踪和跟踪解决方案需要标准集支持的三种高层功能，见图1。
Track-and-trace solutions require three high-level capabilities that are enabled by the standard stack, as shown in Figure 1.
自我意识是产生诸如智能、体贴和学习等较高层次认知功能的原因。
The ego is responsible for the higher cognitive functions such as intelligence, thoughtfulness and learning.
在某种意义上，用例模型让我们链接了高层业务功能和实现这些功能的低层代码。
In some sense, the use-case model lets us make the link between the high-level business function and the low-level code that implement these functions.
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