青年中文secondary activity的意思
secondary activity中文翻譯：
第二級業務
secondary───n.副手；代理人；adj.第二的；中等的；次要的；中級的
activity───n.活動；行動；活躍
secondary consumer───次級消費者
secondary education───中等教育
secondary color───次生色；n.合成色，間色；二次色
secondary school───n.中學；中等學校
secondary products───次級產品；副產品
secondary consideration───次要考慮
secondary succession───[植]次級演替；次生演替系列
service design is usually a secondary activity, although it is sometimes done in parallel.───服務設計常常是次要的活動，盡管有時候并行地完成。
An error code will be returned to the application, and activity against the database will be stopped, if more secondary log files are required than are allowed by this parameter.───如果所需的輔助日志文件的數量比該參數允許的數量大，就會將一個錯誤代碼返回到應用程序，并且會停止對數據庫的操作。
Physical activity is almost always a secondary consideration, and then only because of its power to help us lose weight.───體能活動幾乎成了第二位考慮因素，我們會考慮體能活動也只是因為它能幫助我們減肥。
The service design is usually a secondary activity, although it is sometimes done in parallel.───服務設計常常是次要的活動，盡管有時候并行地完成。
My question is: Why was official business discharged as a secondary activity formerly? And what is the primary activity?───為什么從前的機關事務是作為次要工作執行的？那首要的工作是什么呢？