* between

-用于两人/两物

-用于多人/多物，但各人/物作为个体而非整体：

Keep this between you, me, and the lamppost.

-用于描述某地或某范围的边界或极点：

Ohio is located between Pennsylvania, Indiana, and three other states.

* among

-用于整体的人或物(in the midst of, in the company of)：

Newt Gingrich was among the winners in a lottery.

-表示广泛区域中的位置：

sitting among a lot of nobodies

- “鹤立鸡群”：

He was a man among men.

来源： May I Quote You On That