The author made analysis in the results from both macroeconomic and microeconomic aspects, and make theoretical explanations on Land-for-security policy with the theory of social exchange.
笔者从宏观和微观两个方面对这一结果进行了分析，并结合社会交换理论对土地换保障这一社会政策进行了理论探讨。
Their long-term approach builds on social exchange theory and the concept of 'willingness to cooperate'.
他们的长期办法建立在社会交换理论和'概念的合作意愿'。
With the guidance of social exchange theory, the paper will explore the relationship of modern college students' friendship.
本研究以社会交换理论为指引，试图对当代大学生的友谊交往活动进行初步探索。
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