optional program meaning in English
选择程序
自选动作
Examples
- This tutorial does involve some optional programming elements
这一教程附带包含了一些可选的编程元素。 - The setup computer wizard was unable to locate one or more optional programs . the setup computer wizard will terminate
安装计算机向导无法找到一个或多个可选程序，安装计算机向导即将终止。