private secretary
noun /ˌpraɪvət ˈsekrətri/
  /ˌpraɪvət ˈsekrəteri/
- a secretary whose job is to deal with the more important and personal affairs of a business person私人秘书 
- a civil servant who acts as an assistant to a senior government official政府高级官员的助理 see also parliamentary private secretary