This is something you can eat between meals without ruining your appetite. 这个你可以在正餐之间吃而不影响你的胃口。
between 一般是用于两者的，这里的 between meals 应该是指每两顿饭之间。请老师多给出几例如此 between 后面接复数名词的例子（最好是完整的句子），但表示的意思是“每两个……之间”。谢谢！
下面的例子可供你参考：
▲between children
Sometimes there’s a lot of competition between children for their mother’s attention. 为了得到妈妈的关心，有时小孩们会相互角逐得非常厉害。
▲between classes
There is a break of ten minutes between classes. 课堂间有十分钟的休息时间。
▲between countries
Cultural exchanges are a way of building bridges between countries. 文化交流是各国之间打造联系的纽带。
▲between crimes
There is a sharp distinction between crimes which involve injury to people and those that don’t. 导致人身伤害的犯罪和未导致人身伤害的犯罪两者之间有明显的界线。
▲between games
I spent the five-minute break between games gathering my wits and rethinking my strategy for the second half of the match. 我借助中场休息的五分钟镇静下来，并重新考虑下半场比赛的战术。
▲between jobs
I wanted a little breathing space between jobs. 上一份工作结束后，我需要短暂休整一下再开始下一份工作。
▲between individuals
There’s a great deal of variability between individuals. 人和人之间有非常大的不同。
▲between friends
Money can cause friction between friends. 钱会在朋友之间导致矛盾。
▲between lectures
That’s the bar where Sara and I used to while away the hours between lectures. 我和莎拉课间就在那家小吃店消磨时间。
▲between members
Tickets are transferable between members of the same family. 票证可转给家庭成员用。
▲between meals
Don’t spoil your appetite by eating between meals. 不要在两餐之间吃东西，以免影响胃口。
▲between musicians
Many bands break up because of personality clashes between musicians. 很多乐队都是由于乐手之间性格不合而解散的。
▲between nations
The fusion of ideas results from trade between nations. 思想的融合是国家间贸易的结果。
▲between regions
On this map, demarcations between regions are shown with dotted lines. 这张地图用虚线标出了区域分界线。
▲between rocks
Purple and yellow flowers peeped up between rocks. 岩石间隐约可见紫色和黄色的花儿。
▲between schools
There is now intense competition between schools to attract students. 目前学校之间为了招揽生源展开了激烈角逐。
▲between sobs
In between sobs, he managed to tell them what had happened. 他泣不成声，呜咽着向他们诉说所发生的所有。
between states
Salary scales vary between states. 薪资高低各州都不同。
▲between subjects
In some schools, there is little demarcation between subjects. 在某些学校里，各学科之间几乎没明确界限。
▲between systems
There are an amazing number of commonalities between systems. 体制之间有着多得惊人的共性。
▲between towns
Before the coming of the railways in the late 1860s these old roads were the only link between towns. 在19世纪60年代后期铁路出现之前，这类旧公路便是城镇间唯一的联系。
