What does mapping mean in entity framework?

并映射实体框架中意味着什么？

youdao

How do I make a self reference in Entity Framework Code First?

我怎么在实体框架代码，先做个自我参考？

youdao

Entity Framework won't define its own unique representation for the set of changes represented in an N-Tier application.

对于N层应用程序中所描述的更改集合，Entity Framework并无定义自己独特的表示法。

youdao

And so I think what you'll see in the coming days is continued discussions at the international level, and the United Nations as the lead entity in bringing about this framework.

WHITEHOUSE: Press Briefing by Jay Carney and Ben Rhodes