从别离的施行方案和管理筑路工程是至关重要的，缘由有两个。

Separating planning and management from implementation of road works is crucial for two reasons.

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工具可以将指导模型裁剪到和某个给定设计上下文相关的问题和备选方案，要先裁剪然后才能在项目中全面施行。

Tools can trim the guidance model down to the issues and alternatives that are relevant in a given design context, first during the tailoring step and then throughout the project.

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为使情况有所好转，来自货币与财政政策的刺激方案必须得到施行。

For the picture to get better, the stimulus from monetary and fiscal measures must take hold.

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Plato's famous answer to this is that this city, any city will never be free of conflict, will never be free of factional strife until, in his famous formula, kings become philosophers and philosophers become kings.

柏拉图最著名的回答是,这座城，或任何一座,都将免不了冲突，或是派系斗争，直到施行其著名的方案，国王成为哲学家,哲学家亦成王。

耶鲁公开课 - 政治哲学导论课程节选