高校大型群众性活动保卫工作的思考的翻译：On the major mass events and security work in University 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

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On the major mass events and security work in University

University large-scale mass character activity security work ponder

Large-scale mass activities of colleges and universities work to safeguard reflection

On the major mass events and security work in University