in-between

形容词 in-between:

1. being neither at the beginning nor at the end in a series
   同义词：mediate, middle

in-be.tween

adj.（形容词）
Intermediate:
中间的：
例句：
Adolescence is an awkward, in-between age.
青春期是一个尴尬的夹在中间的年龄段

n.（名词）
An intermediate:
中间派：
例句：
conservatives, radicals, and in-betweens.
保守派、激进派和中间派