This proof-of-concept prototype provides ftpfs, which allows anonymous FTP with a filesystem interface.

这种概念性的原型提供了 ftpfs，这可以使用文件系统接口提供匿名 FTP 访问。

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The process — from establishing a proof-of-concept prototype to realizing a fully functional solution — may take three to four months.

从建立验证概念的原型到实现一个功能完整的方案的过程大约需要三、四个月。

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However, as the project progresses from concept to prototype to running system, the business and development teams' understanding of the business problem should evolve from fuzzy to concrete.

然而，随着项目从概念进展到原型再到运行系统，业务和开发团队对业务问题的理解应当会逐渐从模糊走向具体。

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At this stage the Airwash is a concept prototype but she believed it could one day become a commercial reality.

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While they have moved from concept to prototype to beta testing in the past year, their initial experience was trial by fire.

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And several companies had concept and prototype devices that envisioned digital cameras and global positioning system expansion devices that would fit into the SD card slot.

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