rbiter
n
1 ~ (of sth) person who has power to decide what will be done, accepted, etc with regard to sth (对某事物有权决定处理, 认可等的)仲裁人; 裁决人; 权威人士
the arbiters of fashion 时装的权威.
2 (dated or Scot 旧或苏格兰) = arbitrator.
Could you change my flight date from London to Tokyo?
请你更改一下从伦敦到东京的班机日期好吗?
A parliamentary committee representing all political parties appoints a person who is suitably qualified to investigate private grievances against the State.