The expressions surrounded by brackets (" [" and "] ") represent optional items that may be required depending on the previous choices.

方括号(“[”和“]”)包括的表达式表示一些可选项目，是否需要取决于前面的选择。

youdao

Some optional items that I found useful are as follows.

一些可选项目，我发现有用的内容如下。

youdao

Some optional items that I found useful are as follows.

一些可选项目，我发现有用的内容如下。

youdao