As items from the Product Backlog are selected for completion during the sprint planning meeting, they become part of a sprint Backlog.

Product Backlog中的项目会在冲刺规划会议期间得到完成，它们成为积压冲刺的一部分。

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The Product backlog: displaying the backlog puts the current sprint in context and helps prevent the team from feeling isolated within this sprint.

产品backlog：显示整个backlog，突出显示当前的sprint，防止团队感觉到在当前的sprint中被孤立。

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Two backlogs: the product backlog of all the requirements for the product and the sprint backlog containing the requirements planned for the current sprint.

两种挤压未作之事：产品所有需求的产品积压以及sprint积压，包含了当前sprint规划需求。

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