记忆技巧：mediat 调解，斡旋 + or 表人 → 调解人
1.He always takes the role of a mediator in any dispute.
2.The use of a solicitor trained as a mediator would obviate the need for independent legal advice
3.I offered to act as mediator and tried to bring about a reconciliation between the two parties.
4.Go and act as a mediator in their endless argument.
5.Psychological empowerment was a mediator in the relationship between benevolence leadership and job involvement.