It is not uncommon that previously captured requirements are found unnecessary and disappear during requirements negotiation with stakeholders while new requirements emerge in the process.

在与涉众进行有关需求的谈判期间，我们经常会发现先前捕获的需求信息并不重要甚至已经不复存在，而一些新的需求则在这个过程中显现出来。

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System context considers requirements sources that are necessary for the elicitation, negotiation, and documentation of requirements on building SLA Web services.

系统上下文考虑有关构建SLA Web服务的需求引出、协商和文档说明所必需的需求源。

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As with content negotiation, the link element has gone through some evolutionary stages in order to meet the requirements for a parallel Web.

和内容协商类似，为了满足并行web的需求，link元素也经历了一些演变阶段。

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But on the big question of whether or not the Palestinians are going to be in a position to demand from themselves that they meet the requirements of ending violence so that something can happen in terms of a future negotiation, this was a very important step today.

NPR: Understanding the Gaza Border-Crossing Deal