资料来源 : pyDict

中间的中间物,中间人,中间存在者

资料来源 : WordNet®

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}]