Noun:

1. a negotiator who acts as a link between parties

messengern.报信者；先兆

mediatorn.调解人；介质

intermediaryn.仲裁者；调解者；中介adj.中间的；媒介的[计算机] 媒介.

spokesmann.发言人

lawyern.律师

connectionn.联系；关系；连接；亲戚

brokern.经纪人vt.安排；协商

arbitratorn.仲裁人；公断者

agentn.代理人；代理商；药剂；特工人员

negotiatorn.磋商者；交涉者

intercessorn.仲裁者；调解人

intermediatorn.仲人；调解者；仲裁者

1. He acted as a middleman in discussions between the two companies.
   他在两公司的谈判中作中间人。
2. In between you and the vendor without any unnecessary middleman.
   在您和供应商之间没有任何不必要的中间人。