Social role endows the undertaker with a special social relation, which is embodied by responsibility, e.g. duties and obligations, so undertaking responsibilities is a necessary demand of the role.

• 社会角色赋予了角色承担者特殊的社会关系，这种社会关系往往通过职责体现，包括责任和义务，担当职责是角色的必然要求。