演示系统是一种演示文稿图形程序，集制作、演示文稿为一体。

Demo system is a presentation graphics program, focused on the production and presentation.

youdao

演示系统是一种演示文稿图形程序，集制作、演示文稿为一体。

Demo system is a presentation graphics program, focused on the production and presentation.

youdao