In or through the position or interval separating:
在…之间：在分离的位置或时间之间：
between the trees; between 11 o'clock and 12 o'clock.
在树木间；在11点到12点之间
Intermediate to,as in quantity,amount,or degree:
在…之间：在质量、数量或程度上居于中间的：
It costs between 15 and 20 dollars.
这价值在15到20美元之间