go between

基本解释

He is the go-between, representing the development team for the client and balancing client satisfaction with practicality.
他要两面兼顾，既要面对客户代表团队利益，又要以实用性来平衡客户的满意度。
My husband, acting as the go-between and chauffeur, set down one basic rule: We had to be on the road by 9 a.m. each morning.
我的丈夫充当了中间人和司机，并订下了一条基本规则：每天早晨9点之前我们必须上路。
Station branches are quietest at lunch so go between 11am and 2pm while those in shopping centres are quiet from 5.30pm onwards.
站台分店在午餐时间都是比较清闲的，在上午11点到下午2点间。而购物中心的咖啡店则是从下午5点半后开始清闲。

The go-between sees to it that money is passed - often illegally - from one person to another.
So if I want to use a string as we'll call it which is a word or phrase generally, they always go between double quotes, David hence the quotes around David, and they are double quotes not single quotes intentionally.
当我们要表示单词啊，词组啊，句子啊等等这样的东西时,就会用到字符串，它们位于双引号之间，也就是这里双引号之间的，是双引号，不是单引号哦。
哈佛公开课 - 计算机科学课程节选
So this means that we can go directly from the energy between two levels to the frequency of the photon that's emitted when you go between those levels.
这意味着我们可以直接,从两个能级的能量得到它们之间,跃迁发射出光子的频率。
麻省理工公开课 - 化学原理课程节选

There is a long way to go between now and five years from now with companies that do not yet have revenues or earnings.
FORBES: Avalon Rare Metals Announces Shelf Registration

A go-between is a person who takes messages between people who are unable or unwilling to meet each other.