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(documentation subclass EnglishLanguage "(subclass ?CLASS1 ?CLASS2) means that ?CLASS1 is a subclass of ?CLASS2, i.e. every instance of ?CLASS1 is also an instance of ?CLASS2. A Class may have multiple superclasses and subclasses.") Merge.kif 131-133
(documentation subclass ChineseLanguage "(subclass ?CLASS1 ?CLASS2) 的意思是 ?CLASS1 是 ?CLASS2 的 subclass,也就是说, ?CLASS1 的每一个 instance 同时也是 ?CLASS2 的一个 instance。一个 Class 可以具有多个超类别和子类别。") chinese_format.kif 1371-1373

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