Then to explain the cause and the process of the rural cooperative medical institution from a new perspective.
从而从一个全新的视角去解释农村合作医疗制度变迁产生的过程和原因。
The cause of visible fluorescence were analyzed. The mechanism of visible fluorescent is different to infrared fluorescent, it is cooperative absorption and emission of ion pairs.
分析了这些可见荧光产生的原因，指出它不同于红外荧光的发光机理，是一种离子对的合作吸收和发射。
Cultural differences between China and English countries cause people to have different understanding of the cooperative principle and the politeness principle.
中西文化的差异使人们衡量事物的标准有所不同，对合作原则与礼貌原则的重视和理解自然也就不同。
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