非结构化需求模块主要包括：自然文本输入、需求提取分析、交互反馈处理、需求规范处理。
Unstructured demand modules include: natural text input, extraction and analysis demand, interactive feedback processing, requirement specification processing.
这种药物是从原产于南美洲的金鸡纳树的树皮中提取的。到了1856年，对这种药物的需求已经超过了现有的供应。
The drug is derived from the bark of the cinchona tree, native to South America, and by 1856 demand for the drug was surpassing the available supply.
使用此分解方式，我们能够跨业务领域、行业、特定于客户端的需求、上下文或环境提取共性和差异。
With this decomposition, we are able to extract commonality and variations across business domains, industries, and client specific requirements, contexts or environments.
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