This might seem almost the same as the item above, and in reality it’s an extension of the same concept, a more specific application.
这一条看上去几乎与前一条内容相似，而事实上，这正是同一个概念的延伸，一个更为具体的应用。
However, an extension could still be implemented in a way that is application-specific.
但是扩展也应该可以在特定的应用中被重新实现。
However, an extension could still be implemented in a way that is application-specific.
但是扩展也应该可以在特定的应用中被重新实现。
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