韩小龙 发表于 2019-4-25 20:37:54

前天杨凌职业学院雷宗忠教授，花蕾

前天杨凌职业学院雷宗忠教授，花蕾教授培训学员
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韩小龙 发表于 2019-4-25 20:39:56

雷教授81岁以然为果农服务，德高望重。
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