A framework is a reusable, and semi-complete application in the specific domain that can be customized to build a complete application by an application developer.
框架是可重用的特定领域应用软件的半成品，在框架上定制可以建立具体的应用系统。
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As is its habit, Microsoft released the much-delayed OS in semi-complete form in January; early adopters have been receiving frequent multi-megabyte system updates ever since.
Serena Williams twice came from behind to complete a heart-stopping 7-6, 7-6 win over her older sister Venus and claimed a place in the US Open semi-finals on Wednesday.