microcosm

1. N-COUNT A microcosm is a small society, place, or activity which has all the typical features of a much larger one and so seems like a smaller version of it. 社会的缩影[正式] [oft N 'of' n, also 'in' N]

Kitchell says the city was a microcosm of all American culture during the '60s. 基切尔说这个城市曾经是60年代所有美国文化的一个缩影。