The cognitive study of language attempts at the language system and its operation and offers an explanation for the three basic human characteristics.

语言认知研究是语言的系统和系统操作的研究，是对系统三个人类本质属性的解释。

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Conclusion: Simulated behavior practice can improve patients cognitive abilities and can decrease the possibility of position change of eye and head during the operation.

结论：模拟训练法可提高患者的认知能力，降低屈光不正矫正手术中头位和眼位的偏移率。

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Mismatching between morphologic semantics in product design and users cognitive characteristics causes difficulty in users operation.

产品设计中形态语意的表达与用户认知特性不匹配，常造成用户使用操作困难。

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