n person who acts as a messenger or negotiator between two people; intermediary 信使; 调解人; 媒人; 中间人
*act as a go-between 作中间人.
someone who takes messages from one person or group to another because the two sides cannot meet or do not want to meet
act/serve as a go-between
A UN representative will act as a go-between for leaders of the two countries.