美国年轻人和老年人的分化不仅取决于地域，而且跟族群有关。

America's young and old are differentiated not just by region but by race.

youdao

美国年轻人和老年人的分化不仅取决于地域，而且跟族群有关。

America's young and old are differentiated not just by region but by race.

youdao