Use case diagrams are constructs that model the main functions of a system, and identify initial interactions between the system and its environment.

用例图是用来建模系统主要功能的结构，可以识别出最初的系统与它的开发环境之间的交互。

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Other goals have been added along the way to the production release, but these three initial goals have proven to be the main influences on the architecture of the framework.

随生产发行版的出现，还添加了其他目标，但是这三个初始目标已经证明是框架架构的主要影响因素。

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Xdebug intervenes after 49 function calls and yields Figure 2. (By the way, the initial invocation of main to launch the program counts as the first frame.)

Xdebug将在49次函数调用后介入并得到图2(顺便说一句，main的初始调用用于启动程序计数作为第1次调用)。

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The initial response from the main UK parties to Sir Christopher Kelly's report on political finance has been lukewarm.

BBC: Northern Ireland

When Millennium went public in 1996, an initial public offering was the main way biotechs went public.

FORBES: Biotech Battle Scars

The main reason for the initial failure of "Donnybrook!"

WSJ: The Quiet Man Sings | Donnybrook | You Can't Take It With You | Theater Reviews by Terry Teachout