When the user opens a window on a document, the framework creates a view and attaches it to the document.

当用户在一个文档上打开一个窗体，框架创造一个视图，把它放在文档上。

youdao

When the user opens a window on a document, the framework creates a view and attaches it to the document.

当用户在一个文档上打开一个窗体，框架创造一个视图，把它放在文档上。

youdao