这一概念有多种形式，学者和政策制定者对理想项目的框架、范围和成本存在争议。

The concept has multiple forms, and scholars and policymakers argue about the shape, scope and cost of the ideal program.

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近年来，通过网络宣传为一个项目筹集资金的众筹形式已经在各个领域蓬勃发展，包括制作电影、生产节水设备等等。

Crowdfunding, raising money for a project through online appeals, has taken off in recent years for everything from making movies to producing water-saving gadgets.

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这往往是项目导向学习的一种形式。

That tends to be one form of project-based learning.

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