microcosm
noun [ C or U ] uk/ˈmaɪ.krəʊˌkɒz.əm/ us/ˈmaɪ.kroʊˌkɑː.zəm/
缩影；微观世界
a small place, society, or situation that has the same characteristics as something much larger
The audience was selected to create a microcosm of American society. 观众是经过选择的，以把美国社会各阶层人士都纳入其中。
Compare: macrocosm