How, why and where did this radical shift into farming crops and animals take place?
种庄稼、养牲口，这种根本转变是如何、为何、在哪发生的呢？
How, why, and where do people get together?
如何，为什么，在哪可以让人们聚集起来？
(PhysOrg.com) -- Oxford University scientists have solved a 50-year-old puzzle about how, why or indeed if, sugar molecules change their shape.
据物理组织网1月10日报道，牛津大学科学家解开了一个掩盖五十年的谜：糖分子如何、为什么以及是否确实会改变自己的形状。
QA research attempts to deal with a wide range of question types including: factoid, list, definition, how, why, hypothetical, semantically-constrained, and cross-lingual questions.
问答系统的研究试图使系统能回答较宽范围的问题，包括：事实、列举、定义、方式、原因、假设、语义约束和跨语言类型的问题。
QA research attempts to deal with a wide range of question types including: factoid, list, definition, how, why, hypothetical, semantically-constrained, and cross-lingual questions.
问答系统的研究试图使系统能回答较宽范围的问题，包括：事实、列举、定义、方式、原因、假设、语义约束和跨语言类型的问题。
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