青岛市政建设的传统主力军，的翻译：Qingdao municipal construction tradition of the main force, 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

Qingdao municipal building's traditional main force,

Qingdao municipal construction tradition of the main force,

Qingdao municipal administration construction traditional main army,

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Qingdao municipal construction tradition of the main force,