子类型也可以向基类型增加更多的元素和属性声明。

A subtype can also add more element and attribute declarations to the base type.

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坎宁安：他们只是做了引用链向一个叫作“维基维护目录”的页面。

Ward Cunningham: They just make a reference to a page named WikiMaintenanceCategory.

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专业的篮球运动员麦基·约翰逊向世界宣告他是HIV携带者。

Professional basketball player Magic Johnson tells the world he has HIV.

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传统的大众传媒将向利基(小众？分众？)媒体演化。

Traditional mass media will evolve to niche media.

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传统的大众传媒将向利基(小众？分众？)媒体演化。

Traditional mass media will evolve to niche media.

youdao