在这一伟大的变革中，农业科技期刊将充分发挥其媒介作用、桥梁作用和导向作用。
At this great change times, the intermediary role, bridge role and guiding role of agric.
受众选择行为是媒介营销的导向和出发点。
Therefore, the selecting activity of the audience is the starting point and the orientation of media marketing.
城市公共空间导识系统，作为导向识别的媒介，为提高人们生活的方便和信息的传达而服务。
As the guidance recognition medium, the Guiding Sign System of urban public space serve the people in order to enhance the convenience and the information transmission.
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