A deliverable-oriented hierarchical decomposition of the work to be executed by the project team to accomplish the project objectives and create the required deliverables.

工作分解结构：对应当由项目团队执行以便实现项目目标，并创造必要的可交付成果的工作，按可交付成果所做的层次分解。

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This fluid mercantile society was not necessarily less religious than medieval Europe, but it was less hierarchical and more concerned with secular objectives.

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