The background image is taken from an attachment to a document called gradblue10.jpg.

背景图像取自名为gradblue10 . j pg的文档的附件。

youdao

Here, I would like to brief on the background and main contents of the document.

下面，我就这个文件的背景和主要内容向各位作个概略的介绍。

youdao

Create a new document and fill the background with black.

建立一个新文件，把背景色设为黑色。

youdao

Create a new document and fill the background with black.

建立一个新文件，把背景色设为黑色。

youdao