Drupal is written on top of a database abstraction layer, so the framework can be easily extended to other database back ends.

Drupal是在数据库抽象层上编写的，所以框架可以轻松地扩展到其他数据库后端。

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This framework also gives developers the ability to create custom controls to produce rich web front-ends.

这个框架也给开发人员创建自定义控件的能力，以便生成丰富的Web前端界面。

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The section ends with two chapters presenting Chet's Timing Framework.

这部分最后的两章节讲述了Chet编写的 定时框架（Timing Framework）。

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We have a nice theoretical framework, but the application of the framework to the real data is hard and it ends up with politics underneath it all; that's just the real world.

我们有清晰的理论框架,但实际运用理论知识却困难重重,最终还是政治支配一切,这就是现实社会

耶鲁公开课 - 金融市场课程节选

When people try to shoehorn these issues into the free-market framework, what ends up happening is that one side of these trade-offs gets ignored.

FORBES: "Intervention" Is Inevitable When The Government Has A Monopoly

The framework for talks on industrial goods has many loose ends, and the text on services does little more than tell negotiators to try harder.

ECONOMIST: But the Doha round of trade talks is far from finished