This internal data structure (literally, "the data about the data") is called meta-data.
这一内部的数据结构(确切地说就是“关于数据的数据”)被称为元数据。
It would be better to store the lines in some internal data structure and reuse them directly.
将行储存在内部数据结构中然后直接重用它们会更好。
Your class subscribes to events generated by your internal data structure.
你的类订阅内部数据结构产生的事件。
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