arbitrate|arbitrated

双方同意请一位专业人士来仲裁他们的商业纠纷。

Both parties agreed to have a professional ___arbitrate their business dispute.

老师调解了两位同学之间的争吵。

The teacher ___arbitrated the argument between two students.

公司请了一位专业人士来调解员工之间的纠纷。

The company hired a professional to ___arbitrate the dispute between employees.