变量也可以被用户选择(例如，保存更改或取消)。

The variable can also be a selection that the user can make (for instance, Save changes or Cancel).

youdao

您需要选择上边的框，也就是用户变量，它仅应用于您的用户。

You want the upper of the two, user variables, which apply to just your user.

youdao

用户输入搜索关键字后，流程引擎处理应用程序流并允许流程变量捕获用户的输入。

After the user enters search keywords, the process engine handles the application's flow and allows process variables to capture user input.

youdao

We've been using strings thus far to get input from user and store it in variables.

迄今为止，我们用字符串来接受用户的输入,然后存储在变量里。

哈佛公开课 - 计算机科学课程节选