这不意味着用例模型只能够包含来自于前景的元素。

This doesn't mean that the Use-Case Model can only contain elements from the Vision.

youdao

在焰火表演开始前考虑一下画面中的前景和背景元素，并想想怎样将它们组合起来。

Before the show begins, think about the foreground and background elements of the scene and how you might want to incorporate them.

youdao

在你的公司里有很多你认为是理所当然的元素，而“前景”却会为它们惊叹如果它知道细节的话。

There are elements of your business that you take for granted, but prospects would be amazed if they knew the details.

youdao