Analysis involves describing what the system to be built is at a high (conceptual) level of abstraction.

分析会在较高的(概念级)抽象级别上对将要构建的系统进行描述。

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Design involves describing what the system to be built is and, more importantly, how to build it.

设计会描述将要构建的系统，更重要的是，它还会对如何构建加以描述。

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Architectural model describing the system.

描述系统的架构模型。

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Mr Hammond told MPs that there was a possibility of a roll-out of a heated third rail system, describing it as "particularly vulnerable".

BBC: Transport Committee

During a Lords debate on higher education on 27 October 2010, Lady Morris voiced concerns about student choice being allowed to "drive the system", describing it as an "imperfect lever".

BBC: Reforms 'could cause some universities to fail'

They fit the vision famously laid out by Vannevar Bush in a 1945 Atlantic Monthly article describing his Memex system.

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