in-be·tween /ˌɪnbɪˈtwin/
(a.)中間的中間物,中間人,中間存在者
in-between
adj : being neither at the beginning nor at the end in a series;
"adolescence is an awkward in-between age"; "in a
mediate position"; "the middle point on a line" [syn: mediate,
middle]