intermediary

中间人、仲介、居间人

The company sells directly to customers without using an intermediary.

这家公司直接卖给客户，不透过中间人。

调解人、协调者

A neighboring country acted as an intermediary in the peace talks.

一个邻国在和谈中担任调解人。

媒介、中介物

Water serves as an intermediary in the transfer of heat.

水在热能传递过程中作为媒介。

中间的、居中的、中介的正式

The dispute was settled at an intermediary stage of the process.

这场争议在程序的中间阶段就解决了。