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

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。

youdao

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

ECONOMIST: America in numbers

And this race to the bottom line price may have led many retailers to sacrifice the very features that differentiated themselves in the marketplace to begin with, such as product quality, merchandise selection, and customer service.

FORBES: Frightful, Not Delightful: Tales of Terrible Customer Service