Commonsense knowledge bases (such as Doug Lenat's Cyc) are an example of "scruffy" AI, since they must be built by hand, one complicated concept at a time.
常识知识库（如道格拉斯·莱纳特的Cyc）就是“scruffy”AI的例子，因为他们必须人工一次编写一个复杂的概念。